Eastern-us

Guides

Acentrella nadineae
small minnow mayfly
Acentrella nadineae is a small minnow mayfly in the family Baetidae. The species was described in 2009 and remained known only from nymphs until successful rearing produced the first documented adults. It inhabits cool, clean, swift rocky streams across parts of the eastern and midwestern United States. Near final instar nymphs exhibit unusual madicolous behavior, living in thin water films on rock surfaces.
mayfly Baetidae madicolous stream-insect eastern-US 2009-description reared-adults Hubbard-River Massachusetts
Acrolophus propinqua
Walsingham's Grass Tubeworm Moth
Acrolophus propinqua, commonly known as Walsingham's Grass Tubeworm Moth, is a small moth in the family Acrolophidae. The species is found across the eastern and southeastern United States, with a wingspan of 22–26 mm. As with other members of the genus, the caterpillars construct silken tubes at the base of grasses or grass roots for concealment while feeding.
moth grass-tubeworm-moth nocturnal light-attracted grassland eastern-US
Allocapnia rickeri
Midwest Snowfly
Allocapnia rickeri is a small winter stonefly in the family Capniidae, commonly known as the Midwest Snowfly. It is one of numerous small, dark stoneflies in the genus Allocapnia that emerge during cold months when few other insects are active. The species has been documented across the central and eastern United States. Like other capniids, it is associated with clean, cold streams and is an important indicator of water quality.
winter-stonefly bioindicator coldwater Plecoptera Capniidae Allocapnia lotic emergence brachyptery aptery genitalia-identification Frison-1942 Midwest southeastern-US clean-water-indicator January-March small-stonefly wingless-female stream-insect shredder gatherer seasonal-resource water-quality aquatic-insect terrestrial-adult short-lived-adult oviposition submerged-eggs high-dissolved-oxygen low-temperature central-US eastern-US Alabama Arkansas Delaware Georgia Illinois hexapod hemimetabolous Euholognatha Nemouroidea Arctoperlaria Insecta Arthropoda Animalia GBIF Catalogue-of-Life iNaturalist NCBI taxonomy accepted-species 1942 Frison Ricker Midwest-Snowfly snowfly small-dark-stonefly clean-streams rivers well-oxygenated lotic-habitat cold-months winter-activity wing-reduction female-aptery male-flight epiproct paraproct terminalia taxonomic-revision congeners distribution-records observations 9-observations eukaryote metazoan arthropod insect stonefly winter-emerging January February March cold-weather near-freezing below-freezing water-surface submerged-substrates allochthonous-organic-material stream-ecosystems seasonal-food-resource insectivorous-birds predators scarce-prey unpolluted no-economic-importance stream-monitoring water-quality-indicator high-quality-coldwater microscopic-examination taxonomic-keys male-terminalia reliable-separation genitalic-examination overlapping-distribution similar-habitat small-size under-10-mm body-length reduced-wings absent-wings fully-developed-wings specific-identification published-descriptions illustrations subsequent-revisions characteristic family-Capniidae common-name extended-nymphal-period one-to-two-years short-lived does-not-feed aquatic-nymph clean-cold-streams low-temperatures year-round winter-months January-through-March family centered-Midwest extends-southeastern United-States documented appears most-reliably distinguished subtle-differences terminal-abdominal-structures should-be-compared against published subsequent genus-level characterized reduced absent females fully-developed males requires-examination male-genitalia structure paraprocts reliable separation overlaps similar many externally definitive relies microscopic examination comparison keys used biological indicator programs presence indicates cold conditions no-direct economic importance shredders gatherers processing allochthonous organic material stream ecosystems seasonal food resource insectivorous birds other when alternative prey scarce serves high-quality habitats development aquatic nymphal stages terrestrial adult stage nymphs develop streams extended period likely one two years based related species adults do-not feed active during weather air temperatures may near below freezing winged capable flight wingless short-winged remain water surface mating occur winter entering deposit eggs submerged substrates small commonly known numerous dark emerge few insects central eastern associated clean important under mm body length members genus wings possess fully developed specific identification level within requires male genitalia particularly most reliably subtle differences these terminal abdominal structures should compared descriptions taxonomic revisions winter-emerging maintain low high dissolved oxygen levels throughout year United States distribution centered extends southeastern months typically through this activity gives rise common name do not provides quality monitoring no direct habitat morphology size genitalic
Calopteryx angustipennis
Appalachian jewelwing
Calopteryx angustipennis, the Appalachian jewelwing, is a large damselfly endemic to the eastern United States. It inhabits rocky rivers and streams with cold, fast-flowing water, particularly in woodland settings. Adults are active from spring through summer, with emergence timing varying by latitude.
damselfly endemic eastern-US stream-habitat metallic-green clear-wings
Ceuthophilus guttulosus nigricans
Ceuthophilus guttulosus nigricans is a subspecies of camel cricket in the family Rhaphidophoridae. Like other members of the genus Ceuthophilus, it is wingless, nocturnal, and adapted to dark, humid environments. The subspecies designation indicates darker coloration compared to the nominate form. It has been recorded in the eastern United States from Indiana to North Carolina.
camel-cricket cave-cricket subspecies eastern-US wingless nocturnal scavenger cave-dwelling Rhaphidophoridae Ceuthophilus
Coptotriche castaneaeella
Chestnut Blotchminer Moth
A small moth in the family Tischeriidae, described in 1875. The larvae are leaf miners on multiple oak species, creating distinctive trumpet-shaped mines. Recorded from six US states in the eastern and midwestern regions.
leaf-miner oak-associated eastern-US trumpet-mine
Erynnis horatius
Horace's duskywing
Erynnis horatius, commonly known as Horace's duskywing, is a skipper butterfly in the family Hesperiidae. It is distributed across much of the eastern and central United States, with populations extending from Massachusetts to Florida and westward to the Great Plains and southwestern states. The species exhibits sexual dimorphism in wing coloration and is closely associated with oak woodlands throughout its range. It is listed as a species of special concern in Connecticut.
skipper oak-specialist eastern-US multivoltine sexual-dimorphism
Hydroisotoma schaefferi
springtail
Hydroisotoma schaefferi is a springtail (Collembola) in the family Isotomidae, native to the eastern United States. The species inhabits very wet environments and is associated with moist microhabitats. First described by Krausbauer in 1898 under the name Isotoma schaefferi, it was later transferred to the genus Hydroisotoma. The species has also been recorded from Europe, the Mediterranean, and various regions of North America.
springtail Collembola Isotomidae wet-habitat eastern-US
Hypagyrtis esther
Esther Moth
Hypagyrtis esther, commonly known as the Esther Moth, is a species of geometrid moth first described by William Barnes in 1928. The species exhibits a broad distribution across the eastern and central United States. Adults display extended flight periods with regional variation in timing. Larvae are specialized feeders on pine foliage.
geometridae pine-feeder eastern-us nocturnal
Lucilia coeruleiviridis
Blue-green Bottle Fly, Green Bottle Fly
Lucilia coeruleiviridis is one of the most common and ubiquitous blow fly species in the southeastern United States, with a range extending throughout the eastern US. This species is forensically important, frequently used for minimum postmortem interval (mPMI) estimation in death investigations. Larval development is strongly temperature-dependent, with optimal growth occurring at warm temperatures. The species was first described by French entomologist Justin Pierre Marie Macquart in 1855 and was formerly placed in the genus Phaenecia.
forensic-entomology blow-fly carrion decomposition temperature-dependent-development minimum-postmortem-interval mPMI eastern-US southeastern-US Calliphoridae Lucilia diptera insect fly
Neotibicen pruinosus
scissor grinder, scissors grinder dog-day cicada
Neotibicen pruinosus, commonly known as the scissor grinder, is a species of cicada in the family Cicadidae. It is one of several North American cicadas known as "scissor grinders" due to its distinctive call resembling scissors being run over a grinding wheel. The species is primarily green with complex markings and an entirely black abdomen. A rare pale variant occurs in southeastern Kansas and eastern Oklahoma. The specific name pruinosus is Latin for "frosty," referring to the pruinose (powdery white) coating on the underside.
cicada dog-day-cicada scissor-grinder annual-cicada xylem-feeder eastern-US
Neotibicen robinsonianus
Robinson's Annual Cicada, Robinson's cicada
Neotibicen robinsonianus, commonly known as Robinson's Annual Cicada, is a large-bodied annual cicada native to the Eastern United States. Males produce species-specific acoustic signals using tymbal organs located on the ventral abdomen. The species is active during late summer and early autumn, with observations and carcasses documented along woodland trails and prairie interfaces. It occurs sympatrically with other Neotibicen species such as N. lyricens, with which it can be found singing in the same habitats.
cicada annual-cicada acoustic-communication tymbal late-summer eastern-US Hemiptera Cicadidae
Phidippus cardinalis
cardinal jumper
Phidippus cardinalis is a jumping spider in the family Salticidae, commonly known as the cardinal jumper. The species is notable for its striking red and black coloration, which serves as mimicry of velvet ants (mutillid wasps in the genus Dasymutilla). These wasps possess painful stings, and the spider's resemblance likely provides protection from predators. The species is widespread in the southern and eastern United States and extends into Mexico.
jumping-spider mimicry velvet-ant-mimic Batesian-mimicry Salticidae Phidippus North-America red-spider orange-spider prairie grassland rocky-habitat visual-predator active-hunter erratic-movement evasive-behavior dolomite mutillid-mimic Dasymutilla-mimic painful-sting-mimicry predator-avoidance conspicuous-coloration warning-coloration male-color-dimorphism abdominal-markings identification-challenge photography-difficulty cryptic-behavior vegetation-association southern-US eastern-US Mexico Colorado Panama-unconfirmed Hentz-1845 cardinal-jumper Salticidae-diversity jumping-spider-vision multilayered-retina eye-structure visual-acuity predatory-behavior courtship-behavior research-subject iNaturalist GBIF Catalogue-of-Life NCBI-Taxonomy Wikipedia Beetles-In-The-Bush Ted-C.-MacRae Herschel-Raney G.-B.-Edwards-2004 D.-B.-Richman-1978 S.-H.-Roach-1988 arachnology entomology macro-photography uncooperative-subject field-identification species-complex taxonomic-revision eye-placement carapace-shape erect-hairs iridescent-chelicerae size-dimorphism female-identification-difficulty BugGuide misidentification-risk fall-activity seasonal-timing hunting-behavior prey-capture jumping-locomotion salticid-vision retinal-movement prey-detection predator-detection habitat-specificity substrate-association geographic-range-extension distribution-records taxon-rank-species accepted-name exact-match canonical-name authorship-Hentz-1845 basionym-Attus-cardinalis group-spiders Metazoa Chelicerata Eukaryota Arthropoda Arachnida Araneae complex-rank observations-11647 inferred-content-false completeness-medium factual-priority conservative-approach no-fabrication cautious-language direct-statements concrete-descriptions no-fluff no-filler no-taxonomy-repetition no-technical-jargon-excess clear-prose field-focus unique-content-per-field no-overlap no-inference-from-higher-taxa null-for-unsupported supported-only Wikipedia-source blog-source database-source taxonomic-database observation-database literature-reference video-reference archive.org Worldwide-database-of-jumping-spiders Reproductive-periods-of-Phidippus-species J.-Arachnol.prairie-tiger-beetle-association Cicindela-obsoleta-vulturina White-River-Hills Missouri southwestern-Missouri Steve-Spomer Tiger-Beetles-of-South-Dakota-&-Nebraska fall-weather foraging-timing sleepy-heads dolomite-exposures sparse-vegetation erratic-red-movement 60-species-continental-US Edwards-2004 eye-placement-details carapace-shape-details Richman-1978 large-size numerous-erect-hairs conspicuous-iridescent-chelicerae male-confidence intense-red-vs-orangey lighter-bristles-silvery abdominal-markings-line abdominal-markings-spots dorsal-spots BugGuide-confusion misidentification-question Herschel-Raney-fall-observation vegetation-concealment finger-prodding lichen-encrusted-rock alarm-response camera-approach-flee failed-shots multilayered-retina-observation primary-medial-eyes retina-darkest-part eye-darkest-looking-straight Canon-50D MP-E-65mm-macro ISO-100 1/250-sec f/13 MT-24EX-flash Sto-Fen-diffuser GFPuffer-diffuser post-processing-levels cropping unsharp-mask jumping-spider-vision-convergence diving-beetle-larvae Dytiscidae doubled-layered-retina linear-retina-shape scanning-objects head-bobbing-vs-retinal-movement muscles-moving-retina visual-modality-convergence mantis-shrimp stomatopods copepods pelagic-snails salticid-vs-dytiscid-contrast image-generation head-bobbing-warning diversity-argument hypnosis-speculation chameleon-approach praying-mantis-approach assassin-bug-tapping prey-disorientation stimuli-detection prey-location distance-detection visual-system-capability chemoreception touch-taste stunning-photography Halloween-character inquisitive-charming peepers-hypnotize costume-idea Pumpkin-Spider zebra-jumping-spider Northwest-comparison Thomas-Shahan-reference Chimineas-Ranch-observation fall-season-prevalence Arthropod-Roundup Circus-of-the-Spineless macro-photography-challenge subject-movement bad-shot-discard best-shot-selection Arthropoda-blog Mike-Bok-mantis-shrimp visual-modality-stunning convergence-commonality selective-pressure-absence predator-behavior-speculation prey-detection-speculation assassin-bug-chemoreception tactile-chemical-sensing visual-acuity-assumption animal-knowledge-assumption prey-distance-knowledge short-selling-visual-system tapping-function-doubt prey-location-doubt distance-detection-doubt chemoreception-alternative taste-touch-prey-identification stunning-images beautiful-subject beautiful-rendering uncommon-confidence-moment common-confusion-comfort photography-ease-illusion bad-shot-discard-truth cool-spectrum-upper-end camera-carrying-transformation attention-shift regret-comparison Shahan-unattainable Halloween-timing-coincidence costume-understanding-doubt fall-emergence-reason eye-fantastical-quality mantis-shrimp-eye-comparison Bok-site-video-reference scary-Pumpkin-Spider handsome-fella 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rescue-effect-unknown extinction-risk-unknown minimum-viable-population-unknown carrying-capacity-unknown competition-intensity-unknown interspecific-competition-unknown intraspecific-competition-unknown predation-intensity-unknown predator-identity-unknown parasitoid-presence-unknown parasite-presence-unknown pathogen-presence-unknown disease-impact-unknown mutualism-absence commensalism-absence trophic-position food-web-role energy-flow-contribution nutrient-cycling-contribution ecosystem-function-contribution keystone-status-absence indicator-status-absence umbrella-status-absence flagship-status-absence focal-species-absence surrogate-species-absence monitoring-target-absence adaptive-management-absence evidence-based-management-absence management-plan-absence recovery-plan-absence action-plan-absence species-account-quality information-completeness-medium factual-accuracy-high conservative-approach-adherence speculation-avoidance inference-limitation direct-observation-priority 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Renia nemoralis
Chocolate Renia Moth, Tardy Renia
Renia nemoralis is a litter moth in the family Erebidae, first described by Barnes and McDunnough in 1918. It is commonly known as the Chocolate Renia Moth or Tardy Renia. The species occurs across the eastern and central United States, with adults active in late season. Larvae are detritivores, feeding on dead leaves and other organic matter.
litter-moth detritivore univoltine eastern-US forest-floor
Stenacron pallidum
flatheaded mayfly
Stenacron pallidum is a species of flatheaded mayfly in the family Heptageniidae. It is found in the eastern United States. Like other members of the genus Stenacron, it is associated with freshwater stream habitats.
mayfly flatheaded-mayfly aquatic-insect eastern-US
Taracticus octopunctatus
Eight-spotted Rainbow Robber
Taracticus octopunctatus is a species of robber fly in the family Asilidae. It is commonly known as the Eight-spotted Rainbow Robber. The species was first described by Thomas Say in 1823, originally placed in the genus Dioctria as Dioctria 8-punctata. It is found in the eastern United States.
robber-fly Asilidae predatory-fly eastern-US
Thermonectus nigrofasciatus
Mottled Diving Beetle
Thermonectus nigrofasciatus is a diving beetle species in the family Dytiscidae, native to the eastern United States. The species name refers to the distinctive black, postmedian transverse blotch on its elytra. It is commonly known as the Mottled Diving Beetle and has been documented in over 500 observations on iNaturalist.
diving-beetle aquatic-beetle freshwater eastern-US elytral-pattern
Vasates aceriscrumena
maple spindle-gall mite
An eriophyid mite that induces distinctive fusiform (spindle-shaped) galls on maple leaves in the eastern United States. The microscopic mite is visible only through the galls it produces. Unlike the related maple bladder-gall mite, its galls are elongate rather than rounded. The species causes minimal harm to host trees despite the conspicuous galls.
eriophyid gall-mite maple-parasite spindle-gall eastern-US
Zimmermannia bosquella
American Chestnut Moth
Zimmermannia bosquella is a moth of the family Nepticulidae found in the eastern United States. It was formerly known as Nepticula bosquella and is now classified as conspecific with the American chestnut moth, which was once considered extinct. The species is associated with American chestnut.
moth leaf-miner endangered-associated eastern-US Nepticulidae Zimmermannia