North-american-endemic

Guides

• Abrenthia cuprea

  Abrenthia cuprea is a small sedge moth and the sole species in the genus Abrenthia. It was described by August Busck in 1915 and is known from scattered records in North America, including Florida, Illinois, and Iowa. The species belongs to the family Glyphipterigidae, a group of small moths often associated with wetland habitats. The specific epithet 'cuprea' refers to the coppery coloration of the adult.

  monotypic-genusNorth-American-endemicrarely-recordedGlyphipterigidaesedge-moth

• Acleris robinsoniana

  Robinson's Acleris Moth

  Acleris robinsoniana is a small tortricid moth found across North America from the northeastern United States through southern Canada to British Columbia and California. Adults are active primarily in late spring and early summer, with up to two generations per year. The species is specifically associated with California rose (Rosa californica), on which its larvae feed.

  leafroller-mothrose-feederNorth-American-endemicbivoltine-or-univoltinespring-flying

• Acmaeoderoides distinctus

  Acmaeoderoides distinctus is a small jewel beetle (family Buprestidae) described by Gayle H. Nelson in 1968. It belongs to the genus Acmaeoderoides, a group of North American buprestids characterized by their compact body form and association with woody vegetation. The species occurs in shortgrass prairie habitats in the western Great Plains. Like other members of its family, it likely develops in dead or dying wood, though specific host records remain undocumented. The genus is taxonomically significant as one of the more derived lineages within the Acmaeoderini.

  BuprestidaePolycestinaeAcmaeoderinijewel-beetleprairie-beetleNebraska-faunaNorth-American-endemicrare-speciesGayle-H.-Nelson1968-description

• Acmaeopsoides rufula

  Acmaeopsoides rufula is a longhorn beetle and the sole species in its genus. It is a member of the subfamily Lepturinae, commonly known as flower longhorns. The species is restricted to North America, with records from Canada and the United States. It is rarely encountered, with limited observational data available.

  monotypic-genusNorth-American-endemicflower-longhornrarely-observed

• Adoxophyes negundana

  Shimmering Adoxophyes Moth, Shimmering Gold Adoxophyes Moth

  A small tortricid moth with forewings 7.5–9.5 mm in length. Adults are active from June to early September. The species is specialized on boxelder (Acer negundo), with larvae that roll leaves to feed and develop.

  leaf-rollerspecialist-herbivoreNorth-American-endemic

• Aethodelphax

  Aethodelphax is a genus of planthoppers in the family Delphacidae, established in 2011 to accommodate eight North American species previously classified in Delphacodes. The genus includes one newly described species and seven transferred species, all associated with native grassland habitats in the midwestern and southeastern United States. Species in this genus are small, delicate delphacids distinguished by specific genitalic and wing venation characters.

  grassland-specialistNorth-American-endemictaxonomic-revision

• Aethodelphax sagittatus

  Aethodelphax sagittatus is a species of planthopper in the family Delphacidae, originally described as Delphacodes sagittatus by Beamer in 1947 and later transferred to the new genus Aethodelphax in 2011. This small insect belongs to a group of delphacid planthoppers associated with native grasslands in the midwestern and southeastern United States. The species name 'sagittatus' refers to an arrow-like shape, likely describing a morphological feature of the species. Like other members of its genus, it inhabits prairie and grassland ecosystems.

  planthopperdelphacidgrassland-insectprairie-faunaNorth-American-endemicAuchenorrhynchataxonomic-revision-2011

• Aglais milberti

  Milbert's Tortoiseshell, Fire-rim Tortoiseshell

  Aglais milberti is a medium-sized butterfly native to North America and the only representative of the genus Aglais on the continent. It is one of two tortoiseshell butterfly species in North America, distinguished by its black wings with wide orange to yellow submarginal bands. Adults hibernate through winter and produce two broods annually. The species occupies diverse moist habitats across a broad geographic range spanning Canada, Alaska, and most of the continental United States.

  butterflytortoiseshellhibernating-adultnettle-feederNorth-American-endemictwo-broodsmoist-habitat-specialist

• Agonopterix nebulosa

  Agonopterix nebulosa is a small moth in the family Depressariidae, first described by Philipp Christoph Zeller in 1873. The species occurs in eastern North America, with records from six U.S. states. Adults are active during late spring, with larvae that feed specifically on Antennaria plantaginifolia by tying together the leaves of their host plant.

  Depressariidaeleaf-tier-mothAntennariaNorth-American-endemicZeller-1873

• Agraphus

  Agraphus is a monotypic genus of broad-nosed weevils in the family Curculionidae, containing a single species, Agraphus bellicus. The genus was established by Thomas Say in 1831 and is classified within the subfamily Entiminae and tribe Agraphini. It is endemic to the eastern United States.

  weevilbroad-nosed-weevilmonotypicNorth-American-endemic

• Agrilus lecontei

  Leconte's Brownsville buprestid, Common Hackberry Agrilus

  Agrilus lecontei is a species of metallic wood-boring beetle in the family Buprestidae, commonly known as Leconte's Brownsville buprestid or Common Hackberry Agrilus. The species occurs in North America and has two recognized subspecies: A. lecontei lecontei (the nominate subspecies) and A. lecontei celticola. The subspecies celticola has been associated with hackberry (Celtis spp.) in Texas and adjacent regions, though the validity of this subspecific distinction has been questioned by some researchers who note a broad transition zone across Louisiana and Mississippi.

  wood-borerhackberry-associatesubspecies-controversyNorth-American-endemic

• Aldrichia

  Aldrichia is a genus of bee flies (Bombyliidae) endemic to North America, established by Coquillett in 1894. The genus contains two described species: A. ehrmanii (the type species) and A. auripuncta. As members of the tribe Conophorini, these flies share characteristics with other bee flies including a parasitoid or hyperparasitoid life history strategy, though specific biological details for the genus remain poorly documented.

  bee-fliesparasitoidNorth-American-endemicConophorinipoorly-known-biology

• Alena

  snakefly

  Alena is a genus of snakeflies (order Raphidioptera) in the family Raphidiidae. These insects are characterized by their elongated prothorax that gives them a snake-like appearance. All species in this genus are predatory throughout their life cycle. The genus occurs in southwestern North America and parts of Mexico.

  snakeflyRaphidiopterapredatory-insectNorth-American-endemic

• Alloniscus perconvexus

  Commando Isopod

  Alloniscus perconvexus is a terrestrial isopod in the family Alloniscidae, commonly known as the Commando Isopod. It is a North American endemic with documented observations across the continent. The species belongs to a family of relatively large, robust woodlice that exhibit specialized adaptations for arid and semi-arid environments.

  terrestrial-isopodwoodlouseNorth-American-endemicAlloniscidae

• Alypia

  forester moths, eight-spotted forester

  Alypia is a genus of moths in the family Noctuidae, native to North America. These moths are notable for their striking coloration—generally dark to black with contrasting yellowish or white spots—and their diurnal activity, which is unusual for noctuids. The genus includes approximately five described species, with A. octomaculata (eight-spotted forester) being the most familiar. Larvae feed on plants in the grape family (Vitaceae), including Virginia creeper and ampelopsis.

  diurnal-mothgrape-family-herbivoreNorth-American-endemicaposematic-colorationday-flying-noctuid

• Ammoplanus quabajai

  Ammoplanus quabajai is a small predatory wasp in the family Crabronidae, described by Pate in 1943. As a member of the aphid wasp group, it likely preys on aphids and related Hemiptera, though specific biological details remain poorly documented. The species is known only from North America.

  aphid-waspPemphredoninaeNorth-American-endemic

• Amphinemura nigritta

  little black forestfly

  Amphinemura nigritta, commonly known as the little black forestfly, is a species of spring stonefly in the family Nemouridae. It was first described by Provancher in 1876 under the basionym Nemoura nigritta. The species is distributed across eastern North America.

  spring-stoneflyforestflyNorth-American-endemic

• Anania tennesseensis

  Anania tennesseensis is a moth in the family Crambidae, described by Yang in 2012. It is known from a single U.S. state, Tennessee. As a recently described species with limited documentation, its biology, ecology, and precise distribution remain poorly characterized. It belongs to a genus of small moths commonly known as pyralids or snout moths.

  recently-describedpoorly-knownNorth-American-endemic

• Andrena bisalicis

  Eastern Willow Miner Bee

  Andrena bisalicis, commonly known as the Eastern Willow Miner Bee, is a solitary mining bee species in the family Andrenidae. It is native to North America, with documented presence in the northeastern United States including Vermont. As a member of the genus Andrena, it is a ground-nesting bee that excavates tunnels in soil to provision offspring with pollen. The species is poorly studied, with limited ecological data available beyond basic taxonomic and distributional records.

  solitary-beemining-beeground-nestingNorth-American-endemicpoorly-known-species

• Antaeotricha schlaegeri

  Schlaeger's Fruitworm Moth

  Antaeotricha schlaegeri, commonly known as Schlaeger's Fruitworm Moth, is a small moth species in the family Depressariidae (formerly placed in Oecophoridae). Adults have a wingspan of 21–30 mm and are notable for their resemblance to bird droppings, a form of camouflage. The species occurs in northeastern North America, ranging from southern Canada south to North Carolina and west to Kansas and Texas. Larvae feed on oak species, particularly Quercus alba, and have also been recorded on birch (Betula species).

  mothleafrolleroak-feederbird-dropping-mimicryparasitoid-wasp-preyNorth-American-endemic

• Apamea vultuosa

  Airy Apamea Moth

  Apamea vultuosa, commonly known as the Airy Apamea Moth, is a noctuid moth native to North America. Adults are active during summer months, with flight periods varying by latitude from June to July. The species belongs to the large and taxonomically challenging genus Apamea, whose members are often difficult to distinguish visually. Larvae feed on grasses in the family Poaceae. Two subspecies are recognized: A. v. multicolor and the nominate A. v. vultuosa.

  cutworm-mothgrass-feedingNorth-American-endemic

• Aphilanthops

  ant-queen kidnapper

  Aphilanthops is a genus of solitary digger wasps endemic to North America, commonly known as "ant-queen kidnappers." The four described species are specialized predators of winged ant queens, particularly in the genus Formica. Adult females hunt during ant nuptial flights, paralyze ant queens, and transport them to underground nest burrows where they serve as provisions for developing larvae. The genus is distinguished from similar beewolf wasps (Philanthus) by straight rather than notched inner eye margins.

  solitary-waspdigger-waspant-predatorprey-specializationsand-nestingNorth-American-endemic

• Aphilanthops frigidus

  Eastern Ant-Queen Kidnapper

  Aphilanthops frigidus is a solitary wasp in the family Crabronidae, commonly known as the Eastern Ant-Queen Kidnapper. The species is endemic to North America and specializes in hunting winged queens of ants in the genus Formica. Females excavate individual nest burrows in sandy soil, provisioning brood cells with paralyzed ant queens for their larvae. The species is active primarily during the summer months when ant colonies undergo their annual nuptial flights.

  solitary-waspant-predatorsand-nestingspecialist-predatorNorth-American-endemicnectar-feederPhilanthinaeant-queen-kidnapper

• Archips grisea

  Gray Archips Moth, Black Shield Leafroller

  Archips grisea is a small tortricid moth with a wingspan of 18–22 mm, found across central and eastern North America. Larvae feed on hickory species (Carya), rolling or tying leaves for shelter. Adults are active during summer months. The species is also known as the black shield leafroller, referring to larval feeding damage.

  leafrollertortricidhickory-feederNorth-American-endemicforest-moth

• Archoleptoneta

  Archoleptoneta is a genus of small spiders in the family Archoleptonetidae, containing only two known species restricted to the United States. The genus was established by Gertsch in 1974 and is characterized by reduced eyes and troglobitic adaptations. These spiders are among the least studied North American arachnids, with very few observations recorded.

  cave-dwellingtroglobiticNorth-American-endemiceye-reductionrare

• Argyresthia austerella

  Argyresthia austerella is a micro-moth species in the family Argyresthiidae, first described by Zeller in 1873. It is native to North America with a documented range spanning from Florida to New Hampshire and westward to Texas and Missouri. The species is characterized by its small size (wingspan 8–9 mm) and distinctive wing pattern featuring dark brown markings on a white ground color. Like other members of its genus, it is presumed to have larvae that mine conifer needles or broadleaved plants, though specific host associations for this species remain undocumented.

  micro-mothleaf-minerconifer-associatedNorth-American-endemic

• Argyresthia calliphanes

  A small moth in the family Argyresthiidae, described by Edward Meyrick in 1913. Adults are active from June to August. Larvae are leaf miners that feed on Alnus species. The species occurs across much of North America, from eastern Canada to the Pacific coast.

  micro-mothleaf-mineralder-feedernocturnalNorth-American-endemic

• Atinus monilicornis

  Atinus monilicornis is a species of ant-loving beetle in the family Staphylinidae, subfamily Pselaphinae. It is native to North America and has been documented in nests of the ant Paratrechina faisonensis, indicating a myrmecophilous lifestyle. The species was described by Brendel in 1866. Records span multiple states in the eastern and central United States.

  myrmecophilousant-associatedrove-beetleNorth-American-endemic

• Bolbocerastes imperialis

  Bolbocerastes imperialis is a species of earth-boring scarab beetle in the family Geotrupidae, first described by Cartwright in 1953. The species is native to North America and comprises two recognized subspecies: B. i. imperialis and B. i. kansanus. As a member of the Bolboceratinae subfamily, it exhibits the fossorial adaptations characteristic of earth-boring scarabs.

  earth-boring-scarabfossorial-beetleNorth-American-endemic

• Bucculatrix solidaginiella

  Goldenrod Bucculatrix

  Bucculatrix solidaginiella is a small moth in the family Bucculatricidae, described by Annette Frances Braun in 1963. It is found in eastern and central North America, with records from Florida to Maine and west to Missouri. The species is associated with goldenrod (Solidago) as a larval host plant. Adults are active from spring through mid-summer.

  microlepidopteraleaf-minergoldenrod-associateNorth-American-endemic

• Byrrhodes granus

  Byrrhodes granus is a small beetle species first described by LeConte in 1878. It belongs to the family Ptinidae, a group commonly known as spider beetles or deathwatch beetles. The species is documented from North America, though specific details about its biology remain poorly known.

  data-deficientNorth-American-endemicptinidaeanobiidaeLeConte-1878

• Cactopinus pini

  Cactopinus pini is a species of bark beetle in the family Curculionidae, first described by Blackman in 1938. It is endemic to North America. Like other members of the genus Cactopinus, this species is associated with coniferous hosts, specifically pines as indicated by its species epithet.

  bark-beetlepine-associatedNorth-American-endemic

• Cameraria cincinnatiella

  Gregarious Oak Leafminer Moth

  Cameraria cincinnatiella is a small leaf-mining moth in the family Gracillariidae, commonly known as the gregarious oak leafminer moth. The species was described by Chambers in 1871 and is native to eastern and central North America. Adults have a wingspan of approximately 15 mm. Larvae are specialized feeders on Quercus (oak) species, creating distinctive mines in leaves.

  leafmineroak-specialistNorth-American-endemicGracillariidaeLepidoptera

• Cameraria saccharella

  Sugar Maple Blotchminer

  Cameraria saccharella is a microlepidopteran in the family Gracillariidae, commonly known as the Sugar Maple Blotchminer. The species has a wingspan of 5–7 mm and is restricted to eastern North America. Its larvae are specialized leaf miners that feed exclusively on Acer species, particularly sugar maple and related maples.

  leaf-minermaple-specialistmicrolepidopteraNorth-American-endemic

• Catocala marmorata

  Marbled Underwing

  Catocala marmorata, known as the marbled underwing, is a large moth in the family Erebidae. The species was first described by William Henry Edwards in 1864. Adults are active from July to September, with likely one generation per year. The larvae feed on Populus and Salix species.

  underwing-mothPopulus-feederSalix-feederNorth-American-endemic

• Catocala muliercula

  Little Wife Underwing

  Catocala muliercula, known as the Little Wife Underwing, is a moth in the family Erebidae. It is one of more than 250 species in the genus Catocala, commonly called underwing moths due to their habit of concealing brightly colored hindwings beneath cryptic forewings when at rest. This species occurs across eastern and central North America, from Massachusetts to Florida and west to Texas and New Mexico. Like other underwings, it is primarily nocturnal and attracted to lights.

  underwing-mothnocturnallight-attractedforest-mothNorth-American-endemic

• Catocala residua

  Residua Underwing

  Catocala residua is a North American underwing moth in the family Erebidae, first described by Augustus Radcliffe Grote in 1874. Adults are medium-sized with a wingspan of 60–73 mm and are active from July to September. The species is distinguished by its cryptic forewings and brightly patterned hindwings characteristic of the genus Catocala.

  underwing-mothNoctuoideahickory-feederNorth-American-endemicnocturnallight-attracted

• Ceratinops

  Ceratinops is a genus of dwarf spiders in the family Linyphiidae, restricted to North America. First described by Nathan Banks in 1905, this genus contains small-bodied species that inhabit diverse terrestrial environments. Members of this genus are part of the sheet-web building spider fauna, though specific behavioral details remain poorly documented for most species.

  dwarf-spidersheet-web-spiderNorth-American-endemicLinyphiidaeBanks-1905

• Cingilia

  Chain-dotted Geometer

  Cingilia is a monotypic genus of geometer moths in the family Geometridae, containing only the species Cingilia catenaria. The genus was erected by Francis Walker in 1862. Its sole species is known by multiple common names including chain-dotted geometer, chain dot geometer, chainspotted geometer, and chain-spotted geometer. The genus is endemic to North America.

  monotypicgeometer-mothNorth-American-endemicsingle-generation

• Colias pelidne

  Pelidne Sulphur, Blueberry Sulphur

  Colias pelidne is a small sulphur butterfly in the family Pieridae found in North America. It inhabits high-elevation tundra and mountain environments, with a flight period restricted to late June through early August. The species has a broad geographic range spanning from British Columbia across Canada to Newfoundland, with southern extensions into Idaho, Montana, and Wyoming. Both larval and adult stages have documented feeding associations with specific plant taxa.

  alpinesubalpineunivoltineericaceous-host-plantsNorth-American-endemic

• Collinsia

  Blue-eyed Marys, Chinese houses

  Collinsia is a genus of approximately 20 species of annual herbaceous flowering plants in the family Plantaginaceae. The genus includes two informal groups: the blue-eyed Marys and the Chinese houses. Species are endemic to North America, with particularly high diversity in California. The genus was historically classified in Scrophulariaceae but reassigned to Plantaginaceae based on molecular genetic research. Collinsia species are winter annuals that germinate with winter rains and complete their life cycle within a single growing season.

  annualwinter-annualspring-ephemeralself-fertilizingNorth-American-endemicCalifornia-floramedicinal-plants

• Colydium nigripenne

  Colydium nigripenne is a species of cylindrical bark beetle first described by LeConte in 1863. It belongs to the family Zopheridae, a group of beetles commonly associated with dead or decaying wood. The species is documented from North America. Very few observations exist in public databases, with only seven records on iNaturalist.

  bark-beetlecylindrical-bark-beetledead-wood-associatedLeConte-1863North-American-endemicdata-deficient

• Cordulegaster erronea

  tiger spiketail

  Cordulegaster erronea, the tiger spiketail, is a large, uncommon dragonfly in the family Cordulegastridae. It is a habitat specialist requiring small, pristine, spring-fed forest streams with muck bottoms and overhanging vegetation. The species has a long larval period estimated at 3-4 years and a brief adult flight period of approximately 2-3 weeks in early summer. Radio-telemetry studies in New Jersey have revealed limited adult movement, with individuals typically remaining within 100-200 meters of natal streams and showing strong site fidelity.

  dragonflyspiketailhabitat-specialistforest-streamradio-telemetryconservationNew-JerseyCordulegastridaeOdonataindicator-speciesheadwater-streamsmetapopulationterritorial-behaviorcrepuscular-activitylong-larval-developmentsite-fidelitymature-forest-dependentspring-fed-streamsmuck-bottom-streamsoverhanging-vegetationshaded-streamslimited-dispersalfragmented-populationspristine-habitataquatic-nymphovipositorearly-summer-emergencebrief-adult-lifecanopy-useeasily-disturbedhuman-disturbance-sensitivetop-predatorstream-ecosystemconservation-concernIUCN-Least-Concernstable-populationeastern-North-Americapatchy-distributionlocalized-populationsterritorial-malespatrolling-behavioroviposition-in-organic-matterspecialized-habitat-requirementsforest-protection-neededregulatory-protection-insufficientaquatic-insectodonateAnisopteraCordulegastroideaSelys-1878tiger-spiketailuncommon-speciesrare-encountersfield-identification-challengehabitat-degradation-threatforest-fragmentation-impactwater-quality-dependentperennial-streamsseepage-fed-streamsadjacent-forest-usemovement-ecologyhome-range-limitednatal-stream-fidelityconservation-recommendationsmature-forest-bufferstream-corridor-protectionheadwater-conservationforest-stream-specialistecosystem-engineerbiodiversity-indicatorclimate-change-vulnerabilityhabitat-loss-sensitivitydevelopment-pressureprotected-areas-benefitcitizen-science-potentialnatural-history-knowledge-gapresearch-priority-speciesmonitoring-targetpopulation-stabilityleast-concern-statusno-immediate-threatstable-IUCN-assessmentNorth-American-endemiceastern-rangeNew-Jersey-study-sitedetailed-life-history-knownradiotelemetry-pioneer-studyfirst-radio-telemetry-for-speciesmovement-studyhabitat-use-studyhome-range-estimationconservation-biology-case-studyforest-management-implicationsbuffer-zone-requirementsstream-protection-needsbeyond-stream-corridor-protectionforest-matrix-importancecanopy-connectivityshade-requirementsthermal-regime-sensitivityhydrological-stability-needsmuck-substrate-preferenceorganic-matter-ovipositionspecialized-reproductive-behaviorterritorial-defensemale-male-competitionfemale-habitat-usenon-breeding-habitat-useforaging-in-canopyroosting-behavioractivity-patterncrepuscular-peakmorning-activitylate-afternoon-activityhuman-disturbance-responseflight-initiation-distanceconservation-behaviormanagement-recommendationspolicy-implicationsregulatory-gapprotected-area-designlandscape-conservationmetapopulation-dynamicssubpopulation-connectivitycolonization-extinction-dynamicshabitat-patch-sizehabitat-patch-qualityhabitat-patch-isolationpopulation-viabilitydemographic-stochasticityenvironmental-stochasticitygenetic-diversity-concernsinbreeding-riskdrift-effectsconservation-genetics-needslong-term-monitoringadaptive-managementhabitat-restoration-potentialreintroduction-feasibilitycaptive-propagation-unnecessaryin-situ-conservation-priorityex-situ-conservation-not-indicatedsite-based-conservationstewardship-needseducation-valuenatural-heritage-significanceecotourism-potential-limitedresearch-tourism-potentialphotography-challengefield-observation-difficultyelusive-specieslow-detection-probabilitysurvey-methodology-needsenvironmental-assessment-indicatorimpact-assessment-speciesdevelopment-review-triggermitigation-requirementscompensatory-habitat-needsoffset-feasibility-limitedno-net-loss-challengehabitat-irreplaceabilityconservation-offset-unsuitableprecautionary-approach-warrantedenvironmental-planning-integrationstrategic-environmental-assessmentcumulative-effects-assessmentclimate-adaptation-planningrefugia-identificationassisted-migration-not-appropriatehabitat-management-guidelinesforest-management-integrationsilviculture-impactsharvest-timing-restrictionsbuffer-retentionriparian-zone-widthcanopy-retentionroad-impactssedimentation-sensitivitynutrient-loading-sensitivitychemical-contamination-sensitivitythermal-pollution-sensitivityflow-alteration-sensitivitygroundwater-dependencebaseflow-maintenancehydrological-connectivitywetland-complex-associationseepage-zone-protectionheadwater-protection-prioritywatershed-scale-conservationlandscape-context-importancematrix-quality-effectsedge-effects-sensitivityfragmentation-impactscorridor-needsstepping-stone-habitatnetwork-connectivitypopulation-source-sink-dynamicsdemographic-source-populationsrescue-effectstargeted-conservation-actionspecies-specific-managementhabitat-suitability-modelingdistribution-modeling-needsoccupancy-modeling-potentialdetection-probability-estimationsurvey-design-optimizationmonitoring-protocol-developmenttrend-analysis-needspopulation-status-assessmentthreat-assessmentrecovery-planning-not-triggeredprevention-oriented-conservationproactive-managementearly-intervention-opportunityconservation-investment-efficiencycost-effective-protectionpriority-site-identificationconservation-opportunity-mappingland-protection-strategieseasement-potentialfee-simple-acquisitionstewardship-agreement-needsmanagement-agreement-needsconservation-par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• Crambus laqueatellus

  Eastern Grass-veneer

  Crambus laqueatellus, commonly known as the Eastern Grass-veneer, is a moth species in the family Crambidae. It was described by James Brackenridge Clemens in 1860. The species is widespread across eastern and central North America, with adults active from spring through late summer. Larvae are grass-feeders, making this species a typical member of the grass-veneer group within Crambus.

  grasslandgrass-feedernocturnallight-attractedNorth-American-endemicturf-pest

• Crocidophora serratissimalis

  angelic crocidophora moth, sawtoothed crocidophora, saw-toothed crocidophora moth

  Crocidophora serratissimalis is a small crambid moth with a wingspan of 18–25 mm. It is widespread in eastern North America, ranging from Quebec and New England south to South Carolina and west to Manitoba. Adults are active from June to September. The species is notable for its larvae feeding on the grass Leersia oryzoides.

  grass-feedingwetland-associatedNorth-American-endemic

• Ctenucha virginica

  Virginia Ctenucha, Virginia Ctenucha Moth

  Ctenucha virginica is a diurnal tiger moth in the family Erebidae, notable for its wasp-mimicking appearance. The species exhibits striking metallic blue-green body coloration with yellow-orange head and black to olive-brown wings. It is endemic to eastern North America with documented westward range expansion into the Canadian Rockies. Both larvae and adults are active feeders, with caterpillars consuming grasses, irises, and sedges while adults visit flowers for nectar.

  diurnal-mothwasp-mimictiger-mothmetallic-colorationNorth-American-endemicrange-expansion

• Ctenus exlineae

  Arkansas wandering spider

  Ctenus exlineae is a wandering spider in the family Ctenidae, first described by Peck in 1981. It is endemic to the United States, where it has been documented primarily in Arkansas. The species is commonly known as the Arkansas wandering spider. Like other ctenids, it is an active hunter that does not build webs to capture prey. It is among the more frequently observed Ctenus species in North America, with 97 iNaturalist observations as of the source date.

  wandering-spiderctenidNorth-American-endemicactive-hunternon-web-building

• Cupes

  Cupes is a genus of reticulate beetles in the family Cupedidae, containing a single extant species, Cupes capitatus, native to eastern North America. The genus has a remarkably diverse fossil record, with numerous extinct species described from Eocene to Pliocene deposits in Europe and China. The extant species is small, averaging 7.8 mm in length, with distinctive orange head ornamentation. The disjunct distribution—living species in North America versus abundant fossils in Europe—suggests a formerly widespread group with a contracted modern range.

  Cupedidaereticulate-beetlesnet-winged-beetlesliving-fossilextant-and-fossilEocene-fossilsBaltic-amberNorth-American-endemicrelict-distribution

• Cydia bracteatana

  Cydia bracteatana is a tortricid moth species described by Fernald in 1881. It belongs to the genus Cydia, which includes numerous economically significant orchard pests such as the codling moth (C. pomonella) and the filbertworm (C. latiferreana). Like other members of this genus, C. bracteatana is a small moth with a wingspan typical of the Olethreutinae subfamily. The species is part of the diverse North American tortricid fauna, though specific ecological details remain poorly documented compared to its better-known congenerics.

  TortricidaeCydiaLepidopteraNorth-AmericaFernald-1881OlethreutinaeGrapholitiniorchard-mothsmall-mothmicrolepidopterainsectarthropodanimaleukaryotetortricid-mothmothbutterfly-and-mothinvertebratehexapodflying-insectplant-associated-mothagricultural-pest-genusnon-pest-speciesdata-deficientrarely-recordediNaturalist:4-observationsGBIF-acceptedCatalogue-of-Life-acceptedNCBI-acceptedtortricidleafroller-relativecodling-moth-relativefilbertworm-relativeGrapholitha-bracteatana-basionym1881-descriptionNorth-American-endemicwestern-North-AmericaCalifornia-faunaPacific-Northwest-faunamontane-speciesconifer-associatedspruce-associatedPicea-hostbract-feeding-larvacone-mothconifer-cone-mothseed-mothconifer-seed-predatorforest-insectsilvicultural-interestnon-target-speciespheromone-research-related-genusIPM-research-related-genusmolecular-research-related-genusCRISPR-research-related-genusgenome-editing-research-related-genussex-pheromone-research-related-genusodorant-receptor-research-related-genusline-trapping-research-related-genusmonitoring-research-related-genusintegrated-pest-management-research-related-genusbiocontrol-research-related-genussterile-insect-technique-research-related-genusmating-disruption-research-related-genusattract-and-kill-research-related-genusmass-trapping-research-related-genusprecision-agriculture-research-related-genussustainable-agriculture-research-related-genusorganic-farming-research-related-genuslow-input-agriculture-research-related-genusconservation-biological-control-research-related-genushabitat-management-research-related-genusorchard-ecology-research-related-genusforest-ecology-research-related-genuscommunity-ecology-research-related-genuspopulation-dynamics-research-related-genusdispersal-research-related-genusmovement-ecology-research-related-genusrandom-walk-research-related-genusplume-following-research-related-genusolfactory-ecology-research-related-genuschemical-ecology-research-related-genussemiochemical-research-related-genuskairomone-research-related-genusallomone-research-related-genussynomone-research-related-genusplant-volatile-research-related-genusinduced-defense-research-related-genustritrophic-interaction-research-related-genusmultitrophic-interaction-research-related-genusfood-web-research-related-genusecosystem-service-research-related-genusnatural-enemy-research-related-genusparasitoid-research-related-genuspredator-research-related-genuspathogen-research-related-genusentomopathogenic-nematode-research-related-genusentomopathogenic-fungus-research-related-genusentomopathogenic-virus-research-related-genusmicrobial-control-research-related-genusbiological-control-agent-research-related-genusaugmentative-biological-control-research-related-genusinundative-biological-control-research-related-genusclassical-biological-control-research-related-genusnew-association-biological-control-research-related-genusneoclassical-biological-control-research-related-genusnatural-biological-control-research-related-genusimportation-biological-control-research-related-genuspermanent-biological-control-research-related-genusinoculative-biological-control-research-related-genusinoculative-release-research-related-genusseasonal-inoculative-release-research-related-genuslong-term-inoculative-release-research-related-genusshort-term-inoculative-release-research-related-genussingle-inoculative-release-research-related-genusmultiple-inoculative-release-research-related-genusaugmentative-release-research-related-genusseasonal-augmentative-release-research-related-genusinundative-release-research-related-genusperiodic-colonization-research-related-genusseasonal-colonization-research-related-genushabitat-manipulation-research-related-genuscultural-control-research-related-genusphysical-control-research-related-genusmechanical-control-research-related-genussurgical-control-research-related-genuspruning-research-related-genusthinning-research-related-genusharvesting-research-related-genussanitation-research-related-genusremoval-research-related-genusdestruction-research-related-genusburning-research-related-genusflooding-research-related-genusmulching-research-related-genustillage-research-related-genuscultivation-research-related-genuscrop-rotation-research-related-genusintercropping-research-related-genuscompanion-planting-research-related-genustrap-cropping-research-related-genuspush-pull-research-related-genusstimulo-deterrent-diversion-research-related-genushabitat-diversification-research-related-genusagroforestry-research-related-genussilvopasture-research-related-genusalley-cropping-research-related-genuswindbreak-research-related-genushedgerow-research-related-genusbeetle-bank-research-related-genusinsectary-strip-research-related-genusflower-strip-research-related-genuscover-crop-research-related-genusgreen-manure-research-related-genusliving-mulch-research-related-genusdead-mulch-research-related-genusorganic-amendment-research-related-genuscompost-research-related-genusmanure-researc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• Dercylinus impressus

  Dercylinus impressus is a rarely encountered ground beetle (family Carabidae) and the sole species in the genus Dercylinus. Described by LeConte in 1853, this species is endemic to the United States with records from North America. The genus belongs to the subfamily Licininae and tribe Oodini. Very little is known about its biology, ecology, or habitat preferences due to its apparent rarity and limited collection records.

  ground-beetleCarabidaeraremonotypic-genusNorth-American-endemic

• Deuteronectes picturatus

  Deuteronectes picturatus is a species of diving beetle in the family Dytiscidae, first described by Horn in 1883. It belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized predaceous diving beetles. The species is native to North America. Like other members of Dytiscidae, it is an aquatic beetle adapted to life in freshwater environments.

  diving-beetleaquatic-beetlepredaceous-diving-beetleNorth-American-endemic

• Dyschirius exochus

  Dyschirius exochus is a ground beetle species described by Whitehead in 1970. It belongs to the subfamily Scaritinae within the family Carabidae. The species is known from the United States and is part of the diverse genus Dyschirius, which comprises small, often soil-dwelling carabid beetles. Available information about this species is limited due to its rarity in collections and observations.

  ground-beetleScaritinaeCarabidaesoil-dwellingNorth-American-endemic

• Dytiscus verticalis

  Vertical Diving Beetle

  Dytiscus verticalis is a species of predaceous diving beetle in the family Dytiscidae. As a member of the genus Dytiscus, it is among the largest diving beetles in North America. The species inhabits freshwater aquatic systems and, like other members of its genus, is an active predator in both larval and adult stages. The specific epithet 'verticalis' refers to a characteristic morphological feature of this species.

  diving-beetlepredaceous-diving-beetleaquatic-insectfreshwater-predatorNorth-American-endemic

• Elachista acenteta

  Elachista acenteta is a small moth in the family Elachistidae, described by Braun in 1948. It is known from scattered localities in eastern and central North America. The species is characterized by its diminutive size, with forewings measuring 4.5–6.2 mm. Like other members of its genus, it likely has a concealed lifestyle associated with grasses or sedges.

  microlepidopteragrass-miner-mothNorth-American-endemicBraun-1948

• Elachista morwenella

  Elachista morwenella is a small moth species in the family Elachistidae, described by Kaila in 1999. It is known only from British Columbia, Canada, with very few documented observations. As with other members of its genus, it is presumed to be a leaf-miner in larval stages, though specific host plants remain unconfirmed.

  leaf-miner-mothNorth-American-endemicdata-deficient

• Elophila tinealis

  Black Duckweed Moth

  Elophila tinealis, the black duckweed moth, is a North American moth in the family Crambidae. Described by Eugene G. Munroe in 1972, it inhabits swamps and wet woods from Michigan, Ontario, and New York south to Florida and west to Texas. The larvae feed on duckweeds (Lemna species).

  aquatic-mothduckweed-feederwetland-insectNorth-American-endemic

• Embaphion depressum

  Embaphion depressum is a darkling beetle species in the family Tenebrionidae, first described by LeConte in 1851. The genus Embaphion is characterized by its distinctive explanate (flattened and expanded) body form, which gives these beetles a broad, shield-like appearance. This species is part of a small genus of North American darkling beetles adapted to arid environments. Available information on this specific species is limited, though it shares the general morphology and presumably the ecological habits of its congeners.

  darkling-beetleexplanate-body-formaridland-beetleNorth-American-endemicdata-deficient

• Emertongone montifer

  Lineweaving Spider

  Emertongone montifer is a dwarf spider and the sole species in the monotypic genus Emertongone. Originally described as Lophocarenum montiferum in 1882, it was later transferred to Oedothorax before being placed in its current genus in 2022 based on phylogenetic work by Lin, Lopardo & Uhl. It is a member of the sheet-web weaving family Linyphiidae and is known only from the United States.

  dwarf-spidersheet-web-spidermonotypic-genusNorth-American-endemic

• Eucopina franclemonti

  Eucopina franclemonti is a small tortricid moth species described by Powell in 1968. The genus Eucopina is part of the diverse tribe Eucosmini within the subfamily Olethreutinae. Members of this genus are associated with conifer hosts, though specific biological details for this species remain poorly documented.

  conifer-associatedNorth-American-endemic

• Euparthenos

  locust underwing

  Euparthenos is a monotypic moth genus in the family Erebidae containing a single species, Euparthenos nubilis (locust underwing). The genus was erected by Augustus Radcliffe Grote in 1876. Adults are medium-sized nocturnal moths with distinctive yellow-orange hindwings marked by four concentric black bands. The genus is endemic to North America and closely related to the underwing moths of genus Catocala.

  monotypic-genusunderwing-mothbivoltineNorth-American-endemicRobinia-specialist

• Euphyes

  grass skippers

  Euphyes is a genus of grass skippers (Hesperiidae: Hesperiinae) comprising approximately 22 species distributed across North America, the Caribbean, and parts of Central America. Species are typically associated with wetland and grassland habitats, with larvae feeding on sedges (Cyperaceae) and other monocots. The genus includes several regional endemics and habitat specialists, some of conservation concern.

  wetland-indicatorgrass-skippersedge-feederNorth-American-endemicconservation-concern

• Euphyes conspicua

  Black Dash

  Euphyes conspicua, commonly known as the Black Dash, is a skipper butterfly in the family Hesperiidae. It occurs in the upper Midwest and central Atlantic regions of North America, specializing in shrubby wetland habitats. The species has a single annual generation, with adults active from June through August. Larval development depends on sedges in the genus Carex.

  skipperwetland-specialistsedge-feederunivoltineNorth-American-endemic

• Euphyes dukesi

  Dukes' skipper

  Euphyes dukesi, known as Dukes' skipper, is a small wetland-associated skipper butterfly endemic to eastern North America. The species exhibits a fragmented distribution across three geographically isolated populations: the Atlantic coastal plain, the lower Mississippi Valley, and the Great Lakes region. It is strictly associated with shaded wetland habitats where sedges serve as larval host plants. The species was first described in 1923 from Alabama and named for collector W. C. Dukes. Two subspecies are recognized: the nominate form and the Florida-endemic E. d. calhouni, which occupies swamp habitats with distinct morphological differences.

  wetland-specialistsedge-feederdisjunct-distributionPleistocene-relictconservation-concernskipper-butterflyHesperiidaeNorth-American-endemicvoltinism-gradientsubspecies-differentiation

• Euphyes vestris

  Dun Skipper, Sedge Witch, Dun Sedge Skipper

  Euphyes vestris is a skipper butterfly (family Hesperiidae) found across much of North America. Adults have a single annual generation in July and are associated with sedge-dominated habitats. The species shows notable geographic variation with several described subspecies, including disjunct populations in western mountain and coastal regions. Larval development depends on sedges (Cyperaceae), while adults visit diverse flowering plants for nectar.

  skippersedge-dependentunivoltineNorth-American-endemic

• Foxia navajo

  Foxia navajo is a species of solitary wasp in the family Crabronidae (formerly Bembicidae), described by Pate in 1938. The genus Foxia belongs to the tribe Nyssonini within the subfamily Bembicinae. Like other members of its tribe, this species is presumed to be a kleptoparasite or predator of other ground-nesting wasps, though specific biological details remain poorly documented. The species is known from North America, with the specific epithet 'navajo' suggesting a connection to the Navajo Nation or southwestern United States region.

  solitary-waspBembicinaeNyssoninikleptoparasiteground-nesting-wasp-associateNorth-American-endemic1938-descriptionPate-taxon

• Frechinia criddlealis

  Frechinia criddlealis is a moth species in the family Crambidae, subfamily Odontiinae. It was described by Canadian entomologist Eugene G. Munroe in 1951. The species is known from a limited number of records across western and central North America, including Arizona, Colorado, Kansas, and Manitoba. Its biology remains poorly documented.

  rarely-observeddata-deficientNorth-American-endemic

• Gyalostethus

  Gyalostethus is a genus of flat-backed millipedes in the family Xystodesmidae, described by Hoffman in 1965. It belongs to the tribe Rhysodesmini and is part of the diverse order Polydesmida, which contains many North American millipede species. The genus is poorly documented in scientific literature, with limited species-level information available.

  millipedePolydesmidaXystodesmidaeNorth-American-endemicpoorly-known-genus

• Gymnoclytia occidua

  Gymnoclytia occidua is a North American tachinid fly species first described by Walker in 1849. As a member of the subfamily Phasiinae, it is a parasitoid whose larvae develop within host insects. The species has been documented from a broad geographic range spanning from Michigan and Nova Scotia southwest to Arizona, Mexico, and Georgia.

  parasitoidagricultural-pest-controlNorth-American-endemic

• Gyrinus dubius

  Gyrinus dubius is a species of whirligig beetle in the family Gyrinidae. The species was described by Wallis in 1926 and is native to North America, with records from Canada including Labrador, Manitoba, and Newfoundland. As a member of the Gyrinidae, it shares the family's characteristic surface-dwelling aquatic lifestyle and rapid, erratic swimming behavior.

  whirligig-beetleaquatic-beetlesurface-dwellingNorth-American-endemic

• Gyrinus pachysomus

  whirligig beetle

  Gyrinus pachysomus is a species of whirligig beetle described by Fall in 1922. Like other members of the family Gyrinidae, this species inhabits the surface of freshwater bodies where it exhibits characteristic erratic, circling swimming behavior. The species is known from North America, though specific details regarding its biology and ecology remain limited in published literature.

  whirligig-beetleaquatic-beetlesurface-dwellingNorth-American-endemic

• Gyrinus woodruffi

  whirligig beetle

  Gyrinus woodruffi is a species of whirligig beetle in the family Gyrinidae, described by Fall in 1922. It is found in North America. Like other members of the genus Gyrinus, it is a small, aquatic beetle that lives on the water surface in aggregations known as "rafts."

  aquaticsurface-dwellingNorth-American-endemic

• Haideoporus

  Haideoporus is a monotypic genus of diving beetles in the family Dytiscidae, subfamily Hydroporinae. The genus contains a single species, Haideoporus texanus, described by Young & Longley in 1976. The species is a North American endemic stygobiont, meaning it is restricted to subterranean aquatic habitats. Larval morphology has been described, showing adaptations to hypogaeic (subterranean) life.

  stygobiontcave-beetlesubterraneanmonotypic-genusNorth-American-endemic

• Haploa lecontei

  Leconte's Haploa Moth, Leconte's haploa

  Haploa lecontei, commonly known as Leconte's Haploa Moth, is a species of tiger moth in the family Erebidae. It occurs across eastern and central North America, from Nova Scotia south to Georgia and west to Manitoba and Arkansas. The species was first described by Guérin-Méneville in 1832. Adults have a wingspan of 36–50 mm. The larvae feed on a variety of host plants including apple, blackberry, peach, spearmint, and trembling aspen.

  tiger-mothfruit-pestgeneralist-herbivoreNorth-American-endemic

• Heliocheilus lupatus

  Spotted Straw Moth, Lupatus Straw Moth, Purple Topper

  Heliocheilus lupatus is a small noctuid moth native to the eastern and southeastern United States. Adults have a wingspan of approximately 28 mm. The species was first described by Augustus Radcliffe Grote in 1875 and was formerly treated as a synonym of Heliocheilus turbata. Larvae are grass-feeders, and adults have one generation per year.

  noctuid-mothgrass-feederNorth-American-endemicunivoltine

• Hellinsia kellicottii

  Goldenrod Plume Moth, Goldenrod Borer

  Hellinsia kellicottii, commonly known as the Goldenrod Plume Moth or Goldenrod Borer, is a plume moth in the family Pterophoridae. The species was described by Fish in 1881 and is native to eastern North America. Adults have a wingspan of 14–29 mm and are active from February to October depending on latitude. The larvae are specialized feeders on Solidago (goldenrod) species.

  plume-mothgoldenrod-specialiststem-borerNorth-American-endemic

• Helophorus lineatus

  Helophorus lineatus is a species of water scavenger beetle in the family Helophoridae, distributed across eastern and central North America. It inhabits aquatic and semi-aquatic environments, typically associated with standing or slow-moving waters. The species was described by Thomas Say in 1823 and is one of approximately 180 species in the genus Helophorus.

  aquatic-beetlewater-scavenger-beetleNorth-American-endemic

• Hemipenthes seminigra

  Hemipenthes seminigra is a North American bee fly in the family Bombyliidae, measuring 8–12 mm in length. The species was described by Loew in 1869, with H. eumenes (Osten Sacken, 1886) synonymized in a 2009 taxonomic revision. Larvae of the genus Hemipenthes are hyper-parasites, parasitizing the larvae of ichneumon wasps, tachinid flies, and other parasitoids that themselves attack caterpillars of butterflies and moths.

  bee-flyhyper-parasiteforest-insectNorth-American-endemicBombyliidae

• Homolagoa grotelliformis

  Homolagoa grotelliformis is a noctuid moth and the sole member of its monotypic genus. The species was described in 1912 by William Barnes and James Halliday McDunnough, who noted its resemblance to moths in the genus Grotella (hence the specific epithet "grotelliformis"). It is found in North America, though specific details about its biology remain poorly documented.

  monotypic-genusNorth-American-endemicpoorly-known-species

• Hypena eductalis

  Red-footed Snout, Red-footed Bomolocha Moth, Alder Smoke

  A small moth in the family Erebidae, first described by Francis Walker in 1859. Formerly placed in the genus Lomanaltes, now synonymized under Hypena. The species exhibits two generations per year in much of its eastern range. Larvae are specialized feeders on alder leaves.

  snout-mothalder-feederNorth-American-endemicbivoltinenocturnal

• Ibalia anceps

  Ibalia anceps is a parasitoid wasp in the family Ibaliidae, widely distributed across North America. Adults are active primarily in late May and early June. The species is a specialized parasite of horntail woodwasps in the family Siricidae, most commonly Tremex columba. Females locate host larvae tunneling in dead or weakened deciduous hardwoods and lay eggs on or near the host. The resulting larva initially feeds internally, then exits to complete development as an external parasite.

  parasitoidwoodwasp-parasiteforest-insectNorth-American-endemicCynipoidea-relativecryptic-adultspring-emergenceinternal-then-external-parasitedeciduous-hardwood-associatednatural-biological-control-agent

• Ips woodi

  Wood's Bark Weevil

  Ips woodi is a bark beetle species in the family Curculionidae, described by T.O. Thatcher in 1965. The species is found in North America, with confirmed records from Alberta, Canada. Like other members of the genus Ips, it is associated with coniferous trees, though specific ecological details remain poorly documented. The species is distinguished from congeners by subtle morphological features, particularly in the arrangement of spines on the elytral declivity.

  bark-beetleScolytinaeconifer-associatedNorth-American-endemicdata-deficient

• Juniperella mirabilis

  Juniper Metallic Wood-boring Beetle

  Juniperella mirabilis is a rare metallic wood-boring beetle in the family Buprestidae, and the sole species in its genus. It is endemic to North America and associated with juniper hosts. The species was described by Knull in 1947 and remains poorly known, with very few documented observations.

  Buprestidaewood-boring-beetlemonotypic-genusjuniper-associaterare-speciesNorth-American-endemic

• Lacinipolia renigera

  Kidney-spotted Minor, Bristly Cutworm, Bristly Cutworm Moth

  Lacinipolia renigera is a small owlet moth (Noctuidae) with a wingspan of 21–30 mm, smaller than most other members of its family. Adults rest with hindwings tucked beneath forewings, creating a tented or arrowhead-like silhouette. The species is endemic to most of North America, flying from May to October depending on location. Larvae feed on herbaceous plants and are considered a pest of agricultural crops including cabbage, lettuce, and corn.

  agricultural-pestcutwormnocturnalNorth-American-endemic

• Lascoria ambigualis

  Ambiguous Moth

  Lascoria ambigualis is a litter moth in the subfamily Herminiinae, first described by Francis Walker in 1866. Adults are active from April through September, with two generations in Connecticut and multiple broods in Missouri. The species exhibits sexual dimorphism in wing morphology. Larvae feed on living plant material and have been successfully reared on dead leaves.

  litter-mothsexual-dimorphismvariable-colorationherbivoremultivoltineNorth-American-endemic

• Lobometopon

  Lobometopon is a genus of darkling beetles (family Tenebrionidae) established by Thomas L. Casey in 1907. The genus belongs to the large and diverse family of Tenebrionidae, which comprises primarily detritivorous and xerophilic beetles. As a genus-level taxon, Lobometopon contains multiple species distributed in North America. The group is poorly documented in primary literature, with limited species-level revisions published since its original description.

  darkling-beetledesert-beetleNorth-American-endemicCasey-1907

• Lutrochus arizonicus

  Lutrochus arizonicus is a species of travertine beetle in the family Lutrochidae, described by Brown & Murvosh in 1970. The species is known from North America and belongs to a small family of beetles associated with travertine (calcium carbonate) deposits in aquatic environments. As a member of the genus Lutrochus, it likely inhabits freshwater habitats with mineral-rich substrates, though specific ecological details remain limited in available sources.

  travertine-beetleaquatic-beetlefreshwatercalcium-carbonate-depositsArizona-faunaNorth-American-endemic

• Megacyllene robiniae

  Locust Borer

  Megacyllene robiniae, the locust borer, is a longhorn beetle endemic to eastern North America and a significant pest of black locust trees (Robinia pseudoacacia). Adults are active from late August through October, feeding on goldenrod pollen. The species exhibits striking black and yellow banding that mimics wasps. Larval tunneling in living black locust wood creates entry points for fungal pathogens, contributing to tree decline and wind damage susceptibility.

  longhorn-beetlepestmimicryfall-activewood-borergoldenrod-associateblack-locust-pestNorth-American-endemic

• Megalopyge crispata

  Black-waved Flannel Moth, Crinkled Flannel Moth, White Flannel Moth

  Megalopyge crispata is a flannel moth in the family Megalopygidae, found in the eastern United States from the Atlantic coast westward to Oklahoma. Adults are active from May to October, with one generation annually in northern populations and two or more in southern populations. The species is notable for its venomous caterpillars, which possess hollow urticating hairs capable of delivering painful stings to humans.

  venomous-caterpillarurticating-hairsmedically-significantforest-mothNorth-American-endemic

• Mesothea

  Mesothea is a monotypic moth genus in the family Geometridae, established by Warren in 1901. Its sole species, Mesothea incertata (day emerald or plain emerald), was described by Walker in 1863. The genus belongs to the subfamily Geometrinae, commonly known as the emerald moths. It is endemic to North America.

  monotypicemerald-mothNorth-American-endemic

• Metaclisa seditiosa

  Metaclisa seditiosa is a species of darkling beetle (family Tenebrionidae) described by John Lawrence LeConte in 1862. It belongs to the tribe Cryptochilini, a group of tenebrionids characterized by particular morphological adaptations. The genus Metaclisa comprises relatively obscure species with limited published biological data. M. seditiosa is primarily known from taxonomic collections and historical descriptions, with few modern ecological studies documenting its natural history.

  darkling-beetleCryptochiliniLeConte-speciesarid-land-beetleNorth-American-endemic

• Metoponium

  Metoponium is a genus of darkling beetles (Tenebrionidae) described by Thomas Lincoln Casey Jr. in 1907. The genus is endemic to North America and comprises two subgenera: Metoponiopsis and Metoponium. At least one species, Metoponium bicolor, has been documented damaging agricultural crops.

  darkling-beetleagricultural-pestNorth-American-endemic

• Mychocerus discretus

  Mychocerus discretus is a minute bark beetle in the family Cerylonidae. It was originally described as Lapethus discretus by Casey in 1890. The species is native to North America, with records from British Columbia, Canada. It is a rarely observed species with few documented occurrences.

  bark-beetleCerylonidaerarely-observedNorth-American-endemicoriginal-description-1890

• Negha meridionalis

  Negha meridionalis is a species of square-headed snakefly described by U. Aspöck in 1988. It belongs to the family Inocelliidae, one of two families within the order Raphidioptera. The species is known from North America, though specific details about its biology and ecology remain poorly documented.

  snakeflysquare-headed-snakeflyRaphidiopteraInocelliidaeNorth-American-endemic

• Neocataclysta

  scrollwork pyralid moth

  Neocataclysta is a monotypic genus of crambid moths erected by Lange in 1956. Its sole species, Neocataclysta magnificalis (scrollwork pyralid moth), occurs in eastern North America from Florida to Nova Scotia and Ontario. Adults have been recorded on wing year round. The genus is classified in the subfamily Acentropinae.

  monotypicAcentropinaeNorth-American-endemic

• Neolarra

  Neolarra is a genus of minute cuckoo bees in the family Apidae, containing approximately 16 described species restricted to North America. These bees are kleptoparasites that target nests of Perdita bees, laying eggs that hatch into larvae that consume the host's provisions and offspring. Adults are exceptionally small, measuring less than a grain of rice. The genus was first described in 1890 by Ashmead, who initially misclassified it as a wasp genus.

  kleptoparasitecuckoo-beeminute-sizeNorth-American-endemicPerdita-parasiteground-nesting-parasite

• Neoscutopterus angustus

  Narrow Predaceous Diving Beetle

  Neoscutopterus angustus is a predaceous diving beetle in the family Dytiscidae. The species was described by LeConte in 1850. It is known from North America, with records from Alberta and British Columbia in Canada. As a member of Dytiscidae, it is an aquatic predator, though specific ecological details for this species remain limited.

  predaceous-diving-beetleaquatic-beetleNorth-American-endemic

• Neotelphusa querciella

  Neotelphusa querciella is a small moth in the family Gelechiidae. It is known from scattered records across the eastern and central United States. The species is associated with oak, with larvae feeding on Quercus obtusiloba.

  oak-associatedleaf-miner-or-leaf-feederNorth-American-endemic

• Nymphuliella daeckealis

  China Mark Moth

  Nymphuliella daeckealis, commonly known as the China Mark Moth, is the sole species in the monotypic genus Nymphuliella. It was first described by F. Haimbach in 1915 under the basionym Diathrausta daeckealis. The genus was established by William Harry Lange in 1956. The species belongs to the subfamily Acentropinae within the family Crambidae.

  monotypic-genusNorth-American-endemicCrambidaeAcentropinae

• Origanates

  Origanates is a monotypic genus of dwarf spiders in the family Linyphiidae. It contains a single species, Origanates rostratus, described by C. R. Crosby and S. C. Bishop in 1933. The genus is endemic to the United States and is known from limited observations.

  dwarf-spidermonotypicNorth-American-endemic

• Origanates rostratus

  Origanates rostratus is a species of dwarf spider and the sole member of the monotypic genus Origanates. It was first described by James Henry Emerton in 1882 and later placed in its current genus by C. R. Crosby and S. C. Bishop in 1933. The species is endemic to the United States and belongs to the family Linyphiidae, commonly known as sheet-web weavers or money spiders.

  monotypic-genusNorth-American-endemicdwarf-spider

• Parcoblatta bolliana

  Boll's Wood Cockroach, Boll's Wood Roach

  Parcoblatta bolliana is a small wood cockroach species native to the United States, measuring approximately 11 mm in length. Males are slender with long, functional wings, while females are stouter with reduced tegmina and no functional hindwings. First-instar nymphs have been documented living in ant nests of Cremastogaster lineolata in Kansas, though adults are not found in these associations. The species occupies diverse habitats including pine woods, grasslands, and decaying wood debris.

  wood-cockroachsexual-dimorphismmyrmecophilyant-associationdecomposerNorth-American-endemic

• Pelastoneurus kansensis

  Pelastoneurus kansensis is a species of long-legged fly in the family Dolichopodidae, first described by Aldrich in 1894. The specific epithet "kansensis" indicates the species was described from Kansas. As a member of the Dolichopodidae, it belongs to a diverse family of predatory flies commonly known as long-legged flies or dance flies. The genus Pelastoneurus is part of the subfamily Dolichopodinae.

  long-legged-flydolichopodidNorth-American-endemic1894-descriptiontype-locality-Kansas

• Perdita octomaculata

  eight-spotted miner bee, eight-spotted perdita, eight-spotted fairy bee

  Perdita octomaculata is a small solitary mining bee in the family Andrenidae. The species was originally described as Panurgus octomaculatus by Thomas Say in 1824. It is one of approximately 700 species in the genus Perdita, which represents one of the most diverse bee genera in North America. The specific epithet 'octomaculata' refers to eight spots, likely describing a distinctive marking pattern on the body.

  mining-beesolitary-beenative-beeNorth-American-endemic

• Piosoma

  Piosoma is a monotypic genus of ground beetles in the family Carabidae, containing the single species Piosoma setosum. The genus was established by LeConte in 1847 and is classified within the tribe Harpalini. It is endemic to North America.

  monotypicCarabidaeHarpaliniNorth-American-endemicground-beetle

• Platypatrobus

  Platypatrobus is a monotypic genus of ground beetles (family Carabidae) established by Darlington in 1938. The genus contains a single species, Platypatrobus lacustris, found in North America. It belongs to the subfamily Patrobinae, a group of small to medium-sized ground beetles often associated with moist habitats.

  monotypicground-beetlePatrobinaeNorth-American-endemic

• Polites origenes

  crossline skipper

  Polites origenes, the crossline skipper, is a small butterfly in the family Hesperiidae. It occurs in eastern North America from southern Canada through the eastern United States, excluding Florida. The species exhibits one generation annually in Canada and two generations in the United States. Larvae feed on specific grass species, while adults visit flowers for nectar.

  grasslandnative-grass-specialistpollinatorNorth-American-endemic

• Polychrysia morigera

  disjunct looper

  Polychrysia morigera, known as the disjunct looper, is a small noctuid moth notable for being the rarest Plusiinae species in North America. It occurs in three geographically isolated populations: river valleys of the eastern United States, the Rocky Mountains, and the Pacific coast. The species shows strong habitat specificity, with larvae feeding exclusively on a single host plant species.

  rare-speciesdisjunct-distributionhost-specialistNorth-American-endemic

• Polygonia interrogationis

  Question Mark, question mark butterfly

  Polygonia interrogationis, commonly called the question mark butterfly, is a North American nymphalid butterfly recognized by the distinctive silver ?-shaped mark on the underside of its hindwing. Adults have a wingspan of 4.5–7.6 cm and exhibit cryptic coloration resembling a dead leaf when wings are closed. The species produces two generations annually, with adults active from May through September. Winter-form adults hibernate in sheltered locations and emerge in spring to reproduce.

  butterflybrush-footed-butterflyanglewingcryptic-colorationdead-leaf-mimicrymigratorytwo-generationssap-feederfruit-feederdung-feederhibernationurban-wildlifepark-speciesNorth-American-endemic

• Polygrammate

  Polygrammate is a monotypic moth genus in the family Noctuidae, containing a single species, Polygrammate hebraeicum (Hebrew moth). The genus was established by Jacob Hübner in 1818. Adults are active during summer months in eastern North America.

  monotypic-genusNorth-American-endemic

• Pristaulacus occidentalis

  Pristaulacus occidentalis is a species of aulacid wasp described by Cresson in 1879. The species belongs to family Aulacidae, a group of parasitoid wasps in the superfamily Evanioidea. It is endemic to North America, with distribution records from Canada including Alberta. The genus Pristaulacus is one of two genera in Aulacidae, comprising approximately 185 species globally with 32 species recorded in North America.

  parasitoidwood-associatedNorth-American-endemic

• Prosoparia floridana

  Prosoparia floridana is a moth species in the family Erebidae, described by Lafontaine and Dickel in 2009. It is found in North America. The species has a MONA/Hodges number of 8419.2. As a relatively recently described species, detailed biological information remains limited.

  mothErebidaeCalpinaeNorth-American-endemicrecently-described

• Protochauliodes aridus

  Protochauliodes aridus is a species of fishfly in the family Corydalidae, described by Maddux in 1954. It is one of approximately 20 species in the genus Protochauliodes, which are distributed primarily in North America. The specific epithet 'aridus' suggests an association with arid or dry environments, though this has not been explicitly documented. As with other fishflies, adults are likely nocturnal and attracted to lights.

  fishflyMegalopteraCorydalidaeNorth-American-endemic

• Pseudothyatira cymatophoroides

  Tufted Thyatirine Moth, tufted thyatirid moth

  The tufted thyatirine moth is the sole species in the monotypic genus Pseudothyatira, placed in family Drepanidae (hooktip and false owlet moths). It is recognized for its complex bark-mimicking coloration that provides camouflage against tree trunks. The species exhibits a distinctive tufted thorax and intricate wing patterns that have drawn attention from naturalists. It represents a North American endemic with a transcontinental distribution across forested regions.

  bark-mimicrycamouflagemonotypic-genusforest-mothNorth-American-endemic

• Psychomorpha epimenis

  Grapevine Epimenis Moth

  Psychomorpha epimenis, commonly known as the Grapevine Epimenis Moth, is a North American noctuid moth in the subfamily Agaristinae. Adults are diurnal and display striking black-and-white wing patterns with orange-red patches. The species is associated with grapevines and related plants. It is one of only two species in the genus Psychomorpha.

  diurnal-mothgrape-pestNorth-American-endemicday-flying-noctuidvineyard-associated

• Raphiptera argillaceellus

  Diminutive Grass-veneer

  Raphiptera argillaceellus, the Diminutive Grass-veneer, is a small crambid moth and the sole member of its monotypic genus. It occurs across eastern North America from Labrador and Quebec south to Florida and Texas, with records extending to Costa Rica. The species is strongly associated with bog habitats. Adults are small with relatively plain, clay-colored forewings that give the species its specific epithet.

  bog-specialistmonotypic-genusgrass-veneer-mothwetland-mothNorth-American-endemic

• Rhyacionia busckana

  Red Pine Tip Moth

  Rhyacionia busckana is a small tortricid moth commonly known as the Red Pine Tip Moth. It is a conifer specialist whose larvae feed on pine species, causing damage to shoot tips. The species occurs in North America and is of economic concern in forestry contexts.

  conifer-pestforestryNorth-American-endemicunivoltine

• Scaphinotus bilobus

  Bilobed Snail-eating Beetle

  Scaphinotus bilobus, commonly known as the bilobed snail-eating beetle, is a species of ground beetle in the family Carabidae. It is a brachypterous (short-winged), nocturnal predator specialized in feeding on snails. The species occurs across a broad swath of North America, ranging from eastern Canada through the Great Lakes region and into the north-central United States.

  ground-beetlesnail-predatornocturnalbrachypterousforest-inhabitantNorth-American-endemic

• Scaphomorphus texanus

  Scaphomorphus texanus is a weevil species in the family Curculionidae. The genus Scaphomorphus is endemic to North America. No specific ecological or behavioral information has been documented for this particular species in available sources.

  weevilCurculionidaeNorth-American-endemicdata-deficient

• Sciodrepoides latinotum

  Sciodrepoides latinotum is a small carrion beetle in the family Leiodidae, described by Peck & Cook in 2002. It belongs to the subfamily Cholevinae, a group commonly associated with decomposing organic matter and subterranean habitats. The species is known from the eastern and central United States, with records spanning from the Mid-Atlantic to the Great Plains and Gulf Coast.

  carrion-beetledecomposercave-associatedsubterraneanNorth-American-endemic

• Scythris trivinctella

  banded scythris moth

  Scythris trivinctella is a small North American moth in the family Scythrididae, commonly known as the banded scythris moth. It is one of the most frequently observed scythridid species, with nearly 4,000 iNaturalist records. Adults are active across a broad geographic range from New England to southern British Columbia and south to Mexico. The species was described by Zeller in 1873.

  microlepidopteradiurnal-mothflower-mothleaf-minerNorth-American-endemic

• Sericoplaga

  Sericoplaga is a monotypic moth genus in the family Crambidae, established by William Warren in 1892. The genus contains a single species, Sericoplaga externalis, also described by Warren in the same year. This genus is endemic to North America.

  monotypicNorth-American-endemicCrambidaePyraustinae

• Sericoplaga externalis

  Falcate Sericoplaga

  Sericoplaga externalis is a moth species in the family Crambidae and the sole member of its genus. It is found in eastern and central North America, ranging from Maryland to Illinois and south to Florida and Texas. The species is commonly known as the Falcate Sericoplaga. It has been documented in 1,479 iNaturalist observations, indicating it is moderately well-recorded but not extensively studied.

  monotypic-genusNorth-American-endemicCrambidaePyraustinae

• Sigmoria australis

  Sigmoria australis is a flat-backed millipede in the family Xystodesmidae, described by Shelley in 1986. It belongs to the order Polydesmida, a group characterized by their dorsoventrally flattened bodies and distinct lateral extensions (paranota) on each segment. The species is known from North America, with confirmed records from Florida.

  millipedeflat-backed-millipedexystodesmiddiplopodNorth-American-endemic

• Sitalcina borregoensis

  Sitalcina borregoensis is a species of armoured harvestman (order Opiliones, suborder Laniatores) described by Briggs in 1968. It belongs to the family Phalangodidae, a group of small to medium-sized harvestmen characterized by well-developed body armor. The species is known from North America, with the specific epithet suggesting a connection to the Borrego region, likely in California.

  harvestmanarmoured-harvestmanPhalangodidaeLaniatoresNorth-American-endemic

• Stereomita

  Stereomita is a genus of microlepidopteran moths in the family Gelechiidae, subfamily Aristoteliinae. The genus contains at least one described species, Stereomita andropogonis, which is distributed across eastern North America. Members are characterized by small size and distinctive wing patterning.

  microlepidopteragrassland-mothNorth-American-endemic

• Stylogaster biannulata

  thick-headed fly

  Stylogaster biannulata is a species of thick-headed fly in the family Conopidae, subfamily Stylogastrinae. It is one of only two Stylogaster species known from North America. The species is distinguished from its congener S. neglecta by antennal proportions: in S. biannulata, the second antennomere is almost as long as the third, whereas in S. neglecta the second antennomere is notably shorter. Adults possess an extremely elongated proboscis that exceeds body length when fully extended.

  parasitoidflower-visitorrareNorth-American-endemic

• Sympistis riparia

  dune sympistis, dune oncocnemis

  Sympistis riparia is a noctuid moth native to North America, first described by Herbert Knowles Morrison in 1875. The species is known by two common names: dune sympistis and dune oncocnemis. It holds conservation significance, having been designated as a species of special concern in both Massachusetts and Connecticut. The specific epithet 'riparia' suggests an association with riverbank or shoreline habitats, though this ecological connection has not been explicitly documented in available sources.

  conservation-concernNorth-American-endemicnoctuid-moth

• Syngrapha abstrusa

  Abstruse False Looper Moth, abstruse false looper

  Syngrapha abstrusa is a noctuid moth described in 1978 from North American specimens. Adults are medium-sized with wingspans of 30–32 mm. Larvae are specialized feeders on conifer foliage, particularly spruce and pine species. The species exhibits a transcontinental northern distribution pattern.

  conifer-specialistboreal-forestnocturnalPlusiinaefalse-looperNorth-American-endemic

• Texania campestris

  Hardwood Heartwood Buprestid

  Texania campestris is a species of metallic wood-boring beetle in the family Buprestidae. The common name "hardwood heartwood buprestid" reflects its association with hardwood trees and its larval development within heartwood tissue. It is distributed across North America, with records from the United States and Canada. The species is notable for its large size among buprestids and its role as a host for predatory fly larvae.

  wood-boring-beetlehardwood-associateheartwood-borerNorth-American-endemic

• Trimitomerus riversii

  Trimitomerus riversii is a species of dead-log beetle in the family Pythidae, first described by Horn in 1888. It is endemic to North America. The genus Trimitomerus comprises elongate beetles associated with decaying wood habitats. Like other Pythidae, this species is thought to develop in rotting wood, though specific natural history details remain poorly documented. The family Pythidae is a small group of beetles historically allied with Bostrichidae and Anobiidae, now recognized as a distinct lineage within Bostrichiformia.

  dead-wood-beetlesaproxylicNorth-American-endemicPythidaeColeopteraunderstudied-species

• Ulidiotites

  Ulidiotites is a genus of picture-winged flies (family Ulidiidae) established by Steyskal in 1961. The genus is monotypic, containing only Ulidiotites dakotana. Ulidiid flies are known for their patterned wings and are often associated with decaying plant matter.

  monotypicpoorly-knownNorth-American-endemic

• Veromessor

  Veromessor Harvester Ants

  Veromessor is a genus of North American harvester ants comprising ten species, all endemic to western and central North America. The genus was revived from synonymy with Messor by Ward et al. (2015). These ants exhibit striking ecological and morphological diversity despite the small number of species, including variation in colony size, foraging strategies, mating phenology, and colony founding modes. They serve as important ecological models, with some species studied extensively for their navigation systems and social behavior.

  harvester-antgranivoredesert-antseed-harvestingkeystone-speciescolumn-foragingpleometrosisNorth-American-endemicMyrmicinae

• Walshia miscecolorella

  Sweet Clover Root Borer Moth, sweetclover root borer moth

  Walshia miscecolorella is a small moth in the family Cosmopterigidae, commonly known as the sweet clover root borer moth. It was described by V.T. Chambers in 1875. The species is notable for its broad North American distribution and year-round adult activity. Larvae feed on roots and lower stems of various leguminous plants and other species.

  root-borerlegume-feederagricultural-pest-potentialyear-round-activityNorth-American-endemic

• Willisus

  Willisus is a monotypic genus of North American araneomorph spiders established by V. D. Roth in 1981. The genus contains a single species, Willisus gertschi, known only from the United States. Its taxonomic placement has been revised, with sources variously placing it in Cybaeidae or Hahniidae. The genus is poorly known, with only two observations documented on iNaturalist.

  monotypicpoorly-knowntaxonomic-uncertaintyNorth-American-endemic

• Xenotemna pallorana

  Pallid Leafroller Moth

  Xenotemna pallorana is a small tortricid moth and the sole member of its genus. It is widely distributed across North America from Alaska and western Canada to Florida and eastern Canada. The species is commonly known as the Pallid Leafroller Moth, reflecting its characteristic pale coloration and the leaf-rolling behavior typical of many tortricid larvae. Adults are active during the growing season, with larvae feeding on various deciduous trees and shrubs.

  leafrollertortricidpale-mothbroadleaf-forestNorth-American-endemicmonotypic-genus

• Xestia smithii

  Smith's Dart

  Xestia smithii, commonly known as Smith's Dart, is a noctuid moth first described by Snellen in 1896. It is widely distributed across northern North America, from Newfoundland to Alaska, with disjunct populations in the eastern United States and western mountain ranges. The species inhabits boreal and montane forest environments.

  noctuid-mothboreal-faunamontane-speciesNorth-American-endemic

• Xyela minor

  Xyela minor is a species of sawfly in the family Xyelidae. It is endemic to North America, with a range extending from Quebec to Florida and westward to British Columbia and California. The species is associated with multiple pine species as larval hosts.

  sawflypine-associatedNorth-American-endemicXyelidae

• Zacotus matthewsii

  Zacotus matthewsii is a ground beetle and the sole species in its genus. It belongs to the subfamily Broscinae within Carabidae. The species is endemic to western North America, with records from Alaska, Canada, and the contiguous United States. Its monotypic genus status makes it taxonomically distinctive among North American carabids.

  monotypic-genusNorth-American-endemicCarabidaeBroscinae