North-america
Guides
Aulonothroscus punctatus
Aulonothroscus punctatus is a species of small false click beetle in the family Throscidae. The species is found in North America, with distribution records from Ontario and Québec in Canada. Very little detailed biological information has been published for this species.
Aulonothroscus validus
false click beetle
Aulonothroscus validus is a small false click beetle in the family Throscidae, first described by LeConte in 1868. Adults measure 2.5 to 5 mm in length. The species is distributed across North America, with records from Canada and the United States.
Autographa ampla
Large Looper Moth, Raspberry Looper, Brown-patched Looper, Broken-banded Y
Autographa ampla, known as the large looper moth or broken-banded Y, is a Noctuidae moth species first described by Francis Walker in 1858. It has a wingspan of 38–42 mm and is found across much of North America, from Newfoundland to Alaska and south to California, Arizona, New Mexico, and North Carolina. Adults are active from June to August with one generation per year.
Autographa bimaculata
Two-spotted Looper Moth, Twin Gold Spot, Double-spotted Spangle
A medium-sized noctuid moth native to North America, recognized by its distinctive looping flight pattern and characteristic wing markings. Adults are active during summer months with a single annual generation. The species was first described by James Francis Stephens in 1830 and has been documented across a broad transcontinental range.
Autographa flagellum
Silver Whip Moth, Silver Whip
Autographa flagellum, commonly known as the Silver Whip, is a noctuid moth species first described by Francis Walker in 1858. It occurs across southern Canada and the northern United States, with a single annual generation. Adults are active during summer months, and larvae feed on specific host plants in the Asteraceae family.
Autographa labrosa
Autographa labrosa is a species of looper moth in the family Noctuidae, first described by Grote in 1875. It belongs to the subfamily Plusiinae, a group characterized by larvae that move with a looping motion due to reduced prolegs. The species is known from North America and has been assigned the Hodges number 8920. Like other members of the genus Autographa, it is likely nocturnal as an adult, though specific behavioral details remain poorly documented.
Autographa mappa
Wavy Chestnut Y Moth, Wavy Chestnut Y
Autographa mappa, commonly known as the Wavy Chestnut Y Moth, is a North American noctuid moth first described by Grote and Robinson in 1868. Adults have a wingspan of 35–40 mm and are active from June to August, with one generation per year. The species inhabits wooded regions across Canada and the northern United States.
Autographa pasiphaeia
Autographa pasiphaeia is a species of looper moth in the family Noctuidae, subfamily Plusiinae. It is found in North America. The species is assigned MONA/Hodges number 8915. Like other members of the genus Autographa, it is characterized by looping larval locomotion due to reduced proleg structure.
Autographa precationis
Common Looper Moth
Autographa precationis, the Common Looper Moth, is a Noctuid moth native to eastern and central North America. Adults are medium-sized with a wingspan of 30–38 mm and are active from April through October, producing three or more generations annually. The species has expanded its host range to include cultivated soybeans, though with lower feeding efficiency than the closely related soybean looper. Larvae are bright green with distinctive black false eyespots on the head and possess 21–23 crochets per proleg.
Autographa pseudogamma
Delicate Silver Y
A medium-sized North American noctuid moth in the Plusiinae subfamily, characterized by its distinctive wing pattern. Adults are active in mid-summer with a single generation per year. The species occupies a broad geographic range across northern and western North America.
Autographa rubidus
Rusty Looper
Autographa rubidus, commonly known as the Rusty Looper, is a noctuid moth species native to North America. The species ranges from Newfoundland west across southern Canada to southeastern British Columbia, extending south to Maine and Minnesota. As a member of the Plusiinae subfamily, it shares the characteristic looper caterpillar morphology with related species. The specific epithet "rubidus" refers to a reddish or rusty coloration, though detailed adult morphology remains poorly documented in available sources.
Automeris io
Io moth, peacock moth
Automeris io is a colorful North American saturniid moth with sexual dimorphism in adult coloration: males are bright yellow, females reddish-brown to purple. Both sexes possess distinctive eyespots on the hindwings used in anti-predator displays. The caterpillars are gregarious, bright green with red and white lateral stripes, and possess venomous urticating spines that cause painful stings. Adults are nocturnal, lack functional mouthparts, and live 1–2 weeks. Populations have declined in parts of their range, particularly in New England, due to habitat loss and parasitism by introduced biological control agents.
Automeris io neomexicana
Io moth
Automeris io neomexicana is a subspecies of the Io moth, a large saturniid moth native to North America. The caterpillars possess urticating spines capable of delivering painful stings. Adults display prominent eyespots on the hindwings used to startle predators. This western subspecies occurs in the Great Plains and southwestern regions of the United States and Canada.
Automeris iris
Iris Eyed Silkmoth
Automeris iris is a silkmoth in the family Saturniidae, known as the iris eyed silkmoth. It occurs in Central and North America. Like other Automeris species, adults possess distinctive eyespots on the hindwings used for predator defense. The caterpillars bear urticating spines capable of delivering painful stings.
Autoplusia egenoides
Lesser Bean Looper
Autoplusia egenoides is a noctuid moth commonly known as the Lesser Bean Looper. It belongs to the subfamily Plusiinae, a group characterized by looping locomotion in their caterpillars. The species is found throughout North America and is associated with leguminous plants. It was described by Franclemont and Todd in 1917.
Autoplusia olivacea
Olive Bean Looper
Autoplusia olivacea is a looper moth in the family Noctuidae, described by Skinner in 1917. It is known from North America and is assigned Hodges number 8892. The common name "Olive Bean Looper" suggests an association with leguminous host plants, though specific ecological details remain poorly documented.
Autumnimiris
Autumnimiris is a genus of plant bugs (family Miridae) established by Schwartz in 1989. The genus comprises approximately six described species distributed in North America. These mirids are part of the diverse Cimicomorpha infraorder, which includes many predatory and plant-feeding true bugs.
Axinopalpus biplagiatus
Axinopalpus biplagiatus is a species of ground beetle in the family Carabidae. It is found in North America. The species was described by Dejean in 1825.
Axinopalpus fusciceps
black-headed pale carabid
Axinopalpus fusciceps is a ground beetle in the family Carabidae. It occurs from the southwestern United States through Mexico to Guatemala. Activity peaks during summer months, particularly June and July. The species is commonly known as the black-headed pale carabid.
Axinopalpus illectus
Axinopalpus illectus is a small ground beetle in the family Carabidae, subfamily Lebiinae. The species was described by Thomas Casey in 1920 and is known from the United States. It belongs to a genus of minute carabids often associated with leaf litter and ground-level habitats. Like other members of the tribe Lebiini, it is likely predatory, though specific ecological details remain poorly documented.
Axinopalpus vittatus
Axinopalpus vittatus is a species of ground beetle in the family Carabidae, described by Hatch in 1949. The genus Axinopalpus belongs to the subtribe Dromiusina within the tribe Lebiini. The species is recorded from the United States, though specific details about its biology and ecology remain poorly documented in available sources.
Axinotarsus pulicarius
soft-winged flower beetle
A small soft-winged flower beetle (Melyridae) measuring 2.75–3.75 mm, distinguished by a reddish-yellow pronotum with a broad black median band contrasting with dark grey to nearly black head and elytra. Native to Europe with broad distribution excluding northern latitudes and southern Mediterranean regions; introduced to North America where established in the Pacific Northwest and Great Lakes region. Known for elaborate courtship involving excitatory gland displays and mutual frontal tapping between sexes.
Axion plagiatum
Twice-struck Lady Beetle
Axion plagiatum is a species of lady beetle in the family Coccinellidae. It is commonly known as the Twice-struck Lady Beetle. The species occurs in the Caribbean and North America, with records from Louisiana to Oregon and southern California. Adults can be distinguished from the closely related Axion tripustulatum by the absence of a sutural spot on the elytron.
Axylophilus
Axylophilus is a genus of ant-like leaf beetles in the family Aderidae, established by Casey in 1895. Members of this genus are small, inconspicuous beetles associated with decaying wood and leaf litter habitats. The genus is part of a family historically placed within Tenebrionoidea, though Aderidae systematics remain under study. Very few observations or studies document this genus directly.
Azeta repugnalis
repugnant azeta moth
Azeta repugnalis is a moth species in the family Erebidae, commonly known as the repugnant azeta moth. It is classified within the subfamily Erebinae, a diverse group of owlet moths. The species was first described by Jacob Hübner in 1825. It is recorded from North America and has been documented in citizen science observations.
Azeta schausi
Azeta schausi is a moth species in the family Erebidae, first described by Barnes and Benjamin in 1924. It is native to North America and has been assigned MONA/Hodges number 8576. The species was originally described under the basionym Anticarsia schausi. It should not be confused with Bulia schausi, a different moth species from the family Noctuidae that has been intercepted at U.S. ports of entry.
Aztecarpalus schaefferi
Aztecarpalus schaefferi is a species of ground beetle in the family Carabidae, first described by George Ball in 1970. It belongs to the tribe Harpalini within the subfamily Harpalinae. The species is distributed across North America, with confirmed records from the United States and Mexico. As a member of the ground beetle family, it is likely a predatory species, though specific ecological details remain poorly documented.
Bacanius acuminatus
clown beetle
Bacanius acuminatus is a species of clown beetle in the family Histeridae, first described by Casey in 1893. It is native to North America, with confirmed records from California. The species belongs to a group commonly known as clown beetles, characterized by their compact, often rounded body form and clubbed antennae. Like other histerids, it is likely associated with decaying organic matter, though specific ecological details remain poorly documented.
Bacanius globulinus
clown beetle
Bacanius globulinus is a species of clown beetle (family Histeridae) described by Casey in 1893. It belongs to the subfamily Dendrophilinae, a group of small histerid beetles often associated with decaying organic matter. The species has been documented in California, USA, with limited observational records available.
Bacanius hatchi
Bacanius hatchi is a species of clown beetle in the family Histeridae, first described by Wenzel in 1960. It is known from the Pacific Northwest region of North America, with records from Oregon and Washington. As a member of the Histeridae, it belongs to a family of beetles commonly associated with decomposing organic matter and various microhabitats.
Baconia venusta
clown beetle
Baconia venusta is a species of clown beetle in the family Histeridae, described by John Lawrence LeConte in 1845. The genus Baconia is renowned for brilliant coloration and bizarrely flattened body forms, with species exhibiting jewel-like metallic hues that are rare in the Histeridae family. Species in this genus are believed to be predators of wood-boring beetles and their larvae, with some attracted to bark beetle pheromones. B. venusta is one of approximately 116 species in the genus, most of which were described in a 2013 systematic revision.
Bactericera antennata
Rudbeckia Triozid
Bactericera antennata is a psyllid species in the family Triozidae, commonly known as the Rudbeckia Triozid. It is a small, plant-feeding insect in the order Hemiptera, related to aphids and whiteflies. The species is distributed across much of North America with records from numerous U.S. states and Canadian provinces. As with most psyllids, it feeds by penetrating plant phloem and sucking sap.
Bactericera lavaterae
Island Mallow Psyllid
Bactericera lavaterae is a species of psyllid in the family Triozidae, described by Van Duzee in 1924. The species is commonly known as the Island Mallow Psyllid, reflecting its association with mallow plants (Malvaceae). As a member of the Sternorrhyncha suborder, it is a phloem-feeding insect that uses piercing-sucking mouthparts to extract plant sap. The species is part of the diverse Bactericera genus, which contains approximately 24 described species in North America north of Mexico.
Bactericera lobata
Bactericera lobata is a psyllid species (family Triozidae) first described by Crawford in 1914. As a member of the genus Bactericera, it belongs to a diverse group of phloem-feeding insects commonly known as jumping plant lice. The species is recorded from the southwestern United States and northern Mexico. Like other psyllids, it likely feeds on plant phloem sap, though specific host associations remain poorly documented. The genus includes economically significant species such as the potato psyllid (B. cockerelli), but B. lobata itself has received limited research attention.
Bactericera minuta
Bactericera minuta is a small psyllid species native to North America that has become adventive in South America, where it was first recorded in Colombia. It feeds on willow species (Salix), particularly Salix humboldtiana, and has been associated with phytoplasma disease symptoms in infested trees. The species was originally described in 1910 and represents one of only two Bactericera species known from South America, where the genus is not native.
Badister ferrugineus
Badister ferrugineus is a ground beetle species in the family Carabidae, described by Dejean in 1831. The species belongs to the genus Badister, a group of small predatory beetles found primarily in wetland and riparian habitats. Records indicate presence in Canada and the United States.
Badister grandiceps
Badister grandiceps is a species of ground beetle in the genus Badister, first described by Thomas L. Casey in 1920. It is distributed across Canada and the United States in North America. The species is characterized by its brown coloration. Like other members of the genus Badister, it belongs to the tribe Badisterini within the subfamily Harpalinae of the family Carabidae.
Badister obtusus
Short Spotted Beetle
Badister obtusus is a species of ground beetle in the family Carabidae, first described by LeConte in 1878. The species is known from North America, with records from Canada and the United States. It is a member of the diverse genus Badister, which comprises small to medium-sized predatory beetles. Information on its biology and ecology remains limited.
Badister parviceps
Badister parviceps is a small ground beetle in the family Carabidae, described by Ball in 1959. The species is found in North America, with records from Canada and the United States. As a member of the genus Badister, it belongs to a group of predatory beetles commonly known as bombardier beetles or hunting beetles, though specific ecological details for this species remain poorly documented.
Badister reflexus
Badister reflexus is a species of ground beetle first described by John Lawrence LeConte in 1880. It belongs to the family Carabidae, a diverse group of predatory beetles. The species is known from North America, with documented occurrences in Canada and the United States.
Badister transversus
Transverse Harp Ground Beetle
Badister transversus is a species of ground beetle in the family Carabidae. It is known from North America, with records from Canada and the United States. The species was described by Casey in 1920. As a member of the genus Badister, it belongs to a group commonly referred to as harp ground beetles.
Baeocera pallida
Baeocera pallida is a species of rove beetle in the family Staphylinidae, described by Thomas Lincoln Casey in 1900. It belongs to the subfamily Scaphidiinae, a group commonly known as shining fungus beetles due to their association with fungal substrates. The species is documented from scattered localities across eastern and central North America, with records from Canada and the United States.
Baetis alius
small minnow mayfly
Baetis alius is a species of small minnow mayfly in the family Baetidae. It is found in the northwestern United States. As a member of the Baetis genus, it belongs to a diverse group of mayflies commonly known as blue-winged olives, though specific common names for this species are not well established.
Baetis brunneicolor
Blue-winged Rusty Dun
Baetis brunneicolor is a small minnow mayfly species in the family Baetidae, described by McDunnough in 1925. It occurs across northern North America, with records from all of Canada and portions of the United States. As a member of the genus Baetis, it belongs to a diverse group of small, agile mayflies commonly known as blue-winged olives or small minnow mayflies.
Baetis notos
Baetis notos is a species of small minnow mayfly in the family Baetidae. It is found in Central America and North America, with its North American range extending across southern Mexico, the southern United States, and the northwestern United States. The species was described by Allen and Murvosh in 1987.
Baetis piscatoris
Baetis piscatoris is a species of mayfly in the family Baetidae, first described by Jay Traver in 1935. The species is known from the Nearctic region, with records from North America. As a member of the genus Baetis, it belongs to a diverse group of small to medium-sized mayflies commonly referred to as 'blue-winged olives' in angling contexts.
Baetisca berneri
Baetisca berneri is an armored mayfly species described from West Virginia streams. The species has been the subject of ecological life history research examining nymphal development and emergence patterns. It belongs to a genus characterized by distinctive armored nymphal forms adapted to lotic environments.
Baetisca lacustris
Baetisca lacustris is a species of armored mayfly in the family Baetiscidae. It was described by James Halliday McDunnough in 1932. The species is found in North America and belongs to a genus characterized by distinctive armored body plates.
Baetiscidae
armored mayflies
Baetiscidae is a family of mayflies distinguished by their heavily armored nymphs bearing a robust, spiked thoracic notal shield that extends over part of the abdomen. The family contains a single extant genus, Baetisca, with approximately 12 species endemic to North America. Three extinct genera (Protobaetisca, Balticobaetisca, Koonwarrabaetisca) are known from Cretaceous and Eocene deposits, indicating a Pangean origin for the family by at least the Early Jurassic. Together with Prosopistomatidae, Baetiscidae forms the clade Carapacea, characterized by specialized larval armor.
Bagheera prosper
Bagheera prosper is a species of jumping spider in the family Salticidae, first described by Peckham & Peckham in 1901. The species exhibits notable sexual dimorphism in cheliceral structure: males possess long, parallel chelicerae with a large spiral embolus on the prolateral side of the palpal bulb, while females have regular-sized chelicerae and epigynal openings located in spiral atria. It is considered fairly common but difficult to detect due to its cryptic coloration.