North-america
Guides
Agelenopsis oregonensis
Agelenopsis oregonensis is a funnel-web spider in the family Agelenidae. It is found in the United States and Canada, with records from Alberta and British Columbia. Like other members of its genus, it constructs sheet webs with a funnel-shaped retreat. The species was described by Chamberlin and Ivie in 1935.
Agelenopsis potteri
Potter's Grass Spider
A funnel-web spider native to North America that has been introduced to Ukraine, Russia, Kyrgyzstan, and China. It is easily identified by structural features and has established stable breeding populations in urban environments across 19 of 25 Ukrainian administrative regions as of 2025. The species exhibits typical summer-autumn phenology with adult activity peaking in August and September. Unlike many spiders, it cannot disperse via aerial ballooning and spreads through human-mediated transport.
Agelenopsis spatula
funnel weaver spider
Agelenopsis spatula is a species of funnel weaver spider in the family Agelenidae, first described in 1935 by Ralph Vary Chamberlin and Wilton Ivie. It is known only from the United States. As a member of the genus Agelenopsis, it shares the characteristic funnel-web building behavior and elongated spinnerets typical of this group.
Agelenopsis utahana
Utah Funnelweb Spider
Agelenopsis utahana is a species of funnel-web spider in the family Agelenidae. It is found in the United States and Canada, with records from Alberta and British Columbia. Like other members of its genus, it constructs sheet-like webs with a funnel-shaped retreat and hunts prey through rapid pursuit rather than passive entrapment.
Ageniaspis bicoloripes
Ageniaspis bicoloripes is a species of parasitoid wasp in the family Encyrtidae, first described by Girault in 1915. The species is known from scattered records across eastern North America, including Massachusetts, New York, Nova Scotia, Ontario, and Texas. Like other members of its genus, it is likely a parasitoid of insects, though specific host associations for this species remain undocumented in the provided sources. The species is represented in the UCR Encyrtidae collection, one of the largest collections of this family globally.
Ageniella accepta
Ageniella accepta is a small spider wasp (family Pompilidae) found across the southern United States and Mexico. Females exhibit striking ant-mimicry through orange-brown coloration and dark wing bands that resemble the constricted waist of ants. The species is part of the 'accepta species group' alongside A. conflicta and A. blaisdelli, with which it shares similar morphology and biology. Females hunt spiders to provision nests for their larvae.
Ageniella agenioides
Ageniella agenioides is a species of spider wasp in the family Pompilidae. The genus Ageniella includes small species that exhibit ant-mimicry, with females typically displaying orange and brown coloration with banded wings. Species-level identification within Ageniella is challenging and often requires expert examination rather than field observation alone. The genus as a whole is poorly documented, and many aspects of species-specific biology remain unknown.
Ageniella arcuata
Ageniella arcuata is a small spider wasp in the family Pompilidae, described by Banks in 1910. It belongs to the "accepta species group" of Ageniella, a complex of morphologically similar species that includes A. conflicta and A. blaisdelli. Like other members of this genus, it is likely a solitary hunter that provisions nests with paralyzed spiders for its larval offspring. The species is poorly documented in the scientific literature, with most biological details remaining unstudied.
Ageniella longula
Ageniella longula is a species of spider wasp in the family Pompilidae. As with other members of the genus Ageniella, it likely exhibits ant-mimicry in females, with elongated legs and banded wings that create the illusion of ant-like body segmentation. The species belongs to the accepta species group, which includes at least three North American species characterized by small size and distinctive wing patterns.
Ageniella mintaka
Ageniella mintaka is a species of spider wasp in the family Pompilidae, first described by Brimley in 1928. It belongs to the genus Ageniella, which includes small wasps known for ant-mimicry and predation on spiders. The species is part of the 'accepta species group' within the genus. Like congeners, females are likely orange and brown with banded wings, while males differ markedly in coloration.
Aglaonice otignatha
Aglaonice otignatha is a moth species in the family Erebidae, subfamily Hypeninae, described by Hampson in 1924. The genus Aglaonice is small and poorly documented in the literature. Records indicate presence in North America. Available information on its biology, appearance, and ecology is extremely limited.
Aglaothorax ovata
ovate shieldback, ovate shield-back katydid
Aglaothorax ovata is a species of shield-backed katydid in the family Tettigoniidae, commonly known as the ovate shieldback. It is found in North America and is characterized by its short wings and thickened pronotum that forms a shield over the thorax. Adults are active in late summer and fall. The species includes six recognized subspecies with varying distributions and morphological traits.
Aglossa acallalis
Aglossa acallalis is a species of snout moth in the family Pyralidae. It was described by Harrison Gray Dyar Jr. in 1908 based on specimens from the southwestern United States. The species is known from a limited geographic range in southern Arizona and California. It belongs to the genus Aglossa, which includes several species associated with stored products and organic debris.
Aglossa cacamica
Aglossa cacamica is a snout moth in the family Pyralidae, described by Harrison Gray Dyar Jr. in 1913–1914. It is native to North America, with confirmed records from California. The species has a wingspan of 22–34 mm. It belongs to a genus whose common name derives from the elongated labial palps that form a snout-like projection.
Aglyptinus
round fungus beetles
Aglyptinus is a genus of small, rounded beetles in the family Leiodidae, commonly known as round fungus beetles. The genus was established by Cockerell in 1906 and contains over forty described species. Members are classified within the tribe Scotocryptini and are associated with fungal habitats. The genus is distributed across North America, with Aglyptinus laevis being the most well-documented species in the United States and Canada.
Aglyptinus laevis
Aglyptinus laevis is a species of round fungus beetle in the family Leiodidae, first described by John Lawrence LeConte in 1853. It is a small, inconspicuous beetle with a broad North American distribution spanning eastern and central United States and southern Canada. As a member of the tribe Scotocryptini, it belongs to a group of beetles associated with fungal habitats. The species has been documented in 23 U.S. states and two Canadian provinces, with records concentrated in the Midwest, Southeast, and Mid-Atlantic regions.
Agnetina capitata
Northern Stone
Agnetina capitata, commonly known as the northern stone, is a species of stonefly in the family Perlidae. It occurs in North America, with records from eastern Canada and multiple U.S. states including Arkansas, Connecticut, Delaware, and Illinois. As a member of the order Plecoptera, it is associated with aquatic habitats during its immature stages. The species was originally described as Perla capitata by Pictet in 1841.
Agnetina flavescens
Midwestern Stone
Agnetina flavescens, commonly known as the midwestern stone, is a stonefly species in the family Perlidae. It is native to North America and has been documented in several midwestern and southeastern US states. As a member of the common stoneflies, it inhabits freshwater systems where its aquatic nymphs develop. The species was originally described as Perla flavescens by Walsh in 1862 before being transferred to the genus Agnetina.
Agnippe abdita
Agnippe abdita is a small gelechiid moth with a wingspan of 8.5–9 mm, recorded from Utah, Arizona, and California. Adults are active in March. The larvae feed on Cercocarpus ledifolius and Cercocarpus montanus, with larval presence varying by region: March in southern California, June in eastern California and Utah.
Agnippe leuconota
Agnippe leuconota is a small gelechiid moth described by Zeller in 1873. It occurs across a broad geographic range in North America, from the northeastern United States through the Midwest, south to Florida and Texas, and into Mexico. The species is most reliably distinguished from its congener Agnippe prunifoliella by differences in forewing pattern, particularly the absence of distinct white costal markings present in the latter species. Adults are active during late spring and summer.
Agnorisma badinodis
Pale-banded Dart, Spotted-sided Cutworm
Agnorisma badinodis is a noctuid moth with a wingspan of approximately 36 mm. It occurs in southern Canada and the eastern United States, with one generation annually. Larvae feed on a broad range of herbaceous plants and crops.
Agnorisma bollii
Square-spotted Dart
Agnorisma bollii is a noctuid moth known from a disjunct distribution in eastern and central North America. The species is considered rare across its range, with populations occurring west of the Appalachian Mountains and in the Chesapeake Bay region. Adults are active in late summer and autumn. The larval host plant remains unknown.
Agnyphantes arboreus
Agnyphantes arboreus is a species of sheet-web weaver spider in the family Linyphiidae, first described by Emerton in 1915 under the name Bathyphantes arborea. It is a small spider native to western North America, with confirmed records from Alberta and British Columbia in Canada. Like other linyphiids, it constructs flat sheet webs to capture prey. The species epithet 'arboreus' suggests an association with trees or woody vegetation.
Agoliinus leopardus
Leopard Dung Beetle
Agoliinus leopardus is a dung beetle species in the family Scarabaeidae, commonly known as the Leopard Dung Beetle. It is distributed across northern North America, with records from Alaska through the Canadian provinces to the northeastern and north-central United States. As a member of the Aphodiinae subfamily, it is associated with dung decomposition processes. The species has been documented through 62 iNaturalist observations, indicating moderate citizen science engagement.
Agonoleptus
Agonoleptus is a genus of ground beetles (Carabidae) comprising approximately eight described species. The genus was established by Casey in 1914 and is classified within the tribe Stenolophini, subfamily Harpalinae. Species in this genus are found in North America, with records from the United States including Vermont.
Agonoleptus conjunctus
Adjoining Harp Ground Beetle
Agonoleptus conjunctus is a small ground beetle in the tribe Stenolophini, commonly known as the Adjoining Harp Ground Beetle. The species was described by Thomas Say in 1823 and occurs across a broad range from southern Canada through the United States to Central America. As a member of the Carabidae family, it is a predatory beetle active on the ground surface.
Agonoleptus rotundicollis
Round-collared Harp Ground Beetle
A ground beetle species in the family Carabidae, described by Haldeman in 1843. The specific epithet 'rotundicollis' refers to its rounded pronotum. It belongs to the tribe Stenolophini, a group of small to medium-sized ground beetles often associated with open habitats.
Agonoleptus thoracicus
Agonoleptus thoracicus is a ground beetle in the family Carabidae, described by Casey in 1914. It belongs to the tribe Stenolophini within the subfamily Harpalinae. The species has been documented in North America, with specific records from the United States including Vermont.
Agonopterix argillacea
Clay-colored Agonopterix Moth
Agonopterix argillacea is a small moth in the family Depressariidae, first described by Walsingham in 1881. It is known from a broad range across North America, from the Pacific coast through the Great Plains to the Atlantic provinces and southeastern United States. The species has been documented from 915 iNaturalist observations.
Agonopterix canadensis
Canadian agonopterix, Canadian Agonopterix Moth
Agonopterix canadensis is a small moth in the family Depressariidae, with forewings measuring 8.5–10.5 mm. The species occurs across a broad North American range from the northeastern United States and southern Canada westward through the Rocky Mountains to Colorado, California, and Nevada. Larvae feed on Senecio species, including Senecio serra.
Agonopterix dimorphella
Agonopterix dimorphella is a small moth in the family Depressariidae described by Clarke in 1941. It is found in the central and eastern United States, with records from South Carolina, Illinois, Nebraska, Kansas, and Arkansas. The species has a wingspan of 11–18 mm and distinctive reddish-ocherous forewings with fuscous shading and contrasting black and yellow discal spots. Larvae feed on Amorpha fruticosa, a North American shrub in the pea family.
Agonopterix eupatoriiella
Agonopterix eupatoriiella is a small moth in the family Depressariidae, first described from North America in 1878. It has a wingspan of approximately 24 mm and exhibits dark, dusted forewings with distinctive costal streaking. The species is associated with plants in the Asteraceae family, particularly Eupatorium species.
Agonopterix flavicomella
Agonopterix flavicomella is a small moth in the family Depressariidae, first described by Engel in 1907. The species is distributed across the eastern and midwestern United States. Adults have a wingspan of approximately 16 mm and are active during spring, summer, and early autumn. Larvae are known to feed on two specific host plants: Heracleum lanatum (cow parsnip) and Taenidia integerrima (yellow pimpernel).
Agonopterix hyperella
Agonopterix hyperella is a small moth in the family Depressariidae, described by Charles Russell Ely in 1910. It is known from the eastern United States, with records from Alabama, Indiana, Maryland, Massachusetts, North Carolina, Ohio, and Tennessee. The species is associated with Hypericum (St. John's wort) as a larval host plant, with larvae feeding on Hypericum prolificum and Hypericum perforatum.
Agonopterix lecontella
Agonopterix lecontella is a small moth in the family Depressariidae, first described from Pennsylvania in 1860. The species is distinguished by its dark ocherous forewings with scattered blackish-brown dots. Its larvae are known to feed on the wild indigo Baptisia tinctoria. The species remains poorly documented, with few observations recorded.
Agonopterix lythrella
A small moth in the family Depressariidae described by Walsingham in 1889. It is found in northeastern and north-central North America, ranging from the Canadian prairies to the Atlantic coast and south to North Carolina. The species has a wingspan of approximately 15 mm and distinctive tawny-reddish forewings with characteristic pattern elements.
Agonopterix pteleae
A small moth in the family Depressariidae, described from North America in 1920. Adults have distinctive mottled brown forewings with prominent dark markings. Larvae are known to feed on Ptelea trifoliata (common hoptree). The species has a restricted distribution centered on the Great Lakes region.
Agonopterix pulvipennella
Goldenrod Leaffolder Moth
Agonopterix pulvipennella is a small moth species in the family Depressariidae, commonly known as the Goldenrod Leaffolder Moth. It is widely distributed across North America, with adults active throughout most of the year. The species is associated with goldenrod and nettle plants during its larval stage.
Agonopterix senicionella
Agonopterix senicionella is a small moth in the family Depressariidae, described by August Busck in 1902. It is restricted to the eastern United States, with records from Kentucky, Michigan, Ohio, Virginia, and West Virginia. The species is a specialist herbivore whose larvae feed exclusively on Packera aurea, a plant formerly classified as Senecio aureus. Adults are recognized by their distinctive wing pattern of dark ochrous gray with brownish suffusion and characteristic black discal dots.
Agonopterix walsinghamella
Walsingham's Agonopterix Moth
Agonopterix walsinghamella is a small moth in the family Depressariidae, described by August Busck in 1902. Adults are distinguished by their striking deep crimson-red forewings with black and ash-gray speckling and white discal spots. The species occurs in northeastern North America, where its larvae feed on plants in the Myricaceae family.
Agonum aeruginosum
Agonum aeruginosum is a species of ground beetle in the family Carabidae. It occurs in North America, with records from Canada and the United States. As a member of the genus Agonum, it belongs to a group of small to medium-sized carabid beetles commonly found in moist habitats. The species name "aeruginosum" refers to a copper-green or verdigris coloration, though specific color details for this species are not well documented in available sources.
Agonum anchomenoides
Agonum anchomenoides is a species of ground beetle in the subfamily Platyninae. It occurs in Canada and the United States, with records extending to Alaska. As a member of Carabidae, it is a predatory beetle. Specific details regarding its ecology and behavior remain poorly documented in published sources.
Agonum canadense
Agonum canadense is a ground beetle species in the subfamily Platyninae, first described by Goulet in 1969. The species has a restricted distribution in eastern North America, with confirmed records from Ontario, Canada and Pennsylvania, United States. As a member of the large genus Agonum, it shares the general characteristics of small to medium-sized ground beetles with elongated bodies and thread-like antennae.
Agonum collare
Agonum collare is a species of ground beetle in the family Carabidae, found in North America. It belongs to the subfamily Platyninae and is part of the diverse genus Agonum, which contains numerous ground beetle species. The species was described by Thomas Say in 1830. Like other members of its genus, it is likely associated with moist habitats, though specific ecological details remain poorly documented.
Agonum crenistriatum
Agonum crenistriatum is a ground beetle in the subfamily Platyninae, described by John Lawrence LeConte in 1863. The species is endemic to North America, with records from the United States and Canada. It belongs to a genus of small to medium-sized predatory beetles commonly found in moist habitats. Very little specific biological information has been published for this particular species.
Agonum crenulatum
Agonum crenulatum is a species of ground beetle in the family Carabidae. Members of the genus Agonum are generally predatory beetles found in moist habitats. The species is part of the diverse North American fauna of platynine ground beetles. Specific ecological details for this species remain poorly documented.
Agonum cupreum
Cypress Ground Beetle
Agonum cupreum is a ground beetle in the subfamily Platyninae, described by Dejean in 1831. It is known from boreal and northern temperate regions of North America including Alaska, Canada, and the northern United States. As a member of the genus Agonum, it is likely a ground-dwelling predator inhabiting moist or wetland-associated habitats, though specific ecological details for this species remain limited.
Agonum cyclifer
Agonum cyclifer is a ground beetle species in the family Carabidae. It occurs in Mexico and the southwestern United States. The genus Agonum includes predatory beetles commonly found in moist habitats. Very few published observations exist for this species.
Agonum darlingtoni
Darlington's Harp Ground Beetle
Agonum darlingtoni is a small ground beetle in the family Carabidae, subfamily Platyninae. It measures 4.9–5.9 mm in length and is black with iridescent, deeply striated elytra. The species occurs in northeastern North America, including the Northeastern United States and Eastern Canada. It is associated with wet habitats and likely overwinters as an adult.
Agonum decorum
Agonum decorum is a species of ground beetle in the subfamily Platyninae, characterized by its association with riparian habitats near water bodies. It has a broad geographic distribution spanning North America and the Caribbean. The species is documented in ecological research as a representative of predatory beetles in turfgrass systems, though specific biological details remain limited in published literature.