North-american-endemic
Guides
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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."
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.