North-america
Guides
Bradyrhynchoides constrictus
broad-nosed weevil
Bradyrhynchoides constrictus is a species of broad-nosed weevil in the beetle family Curculionidae. It was described by Pierce in 1913. The species is known from North America, with confirmed distribution records from Texas. As a member of the subfamily Entiminae, it possesses the characteristic short, broad rostrum typical of this group.
Branchia
Branchia is a genus of solifuges (sun spiders or camel spiders) in the family Ammotrechidae, described by Muma in 1951. These arachnids are characterized by their elongated bodies, large chelicerae, and rapid running ability. The genus is part of the subfamily Saronominae and contains multiple species distributed in arid regions.
Branchia potens
Branchia potens is a species of solifuge (sun spider) in the family Ammotrechidae, described by Muma in 1951. It belongs to the genus Branchia, which is classified within the subfamily Saronominae. The species is known from North America. As with many solifuges, detailed biological information remains limited in published literature.
Brasema gemmarii
Brasema gemmarii is a North American eupelmid wasp species associated with oak gall wasps (Cynipini). It was first described by Ashmead in 1886. Recent research has expanded its known distribution within the United States. Like other members of its genus, it is presumed to be a parasitoid of cynipid gall wasps, though specific host records for this species were not detailed in the available source.
Brasema leucothysana
Brasema leucothysana is a species of chalcid wasp in the family Eupelmidae, described by Gibson in 1995. It belongs to a genus of parasitoid wasps whose members attack the eggs or larvae of other insects. The species has been recorded from multiple states in the eastern and central United States.
Brasema rhadinosa
Brasema rhadinosa is a species of chalcidoid wasp in the family Eupelmidae, described by Gibson in 1995. It belongs to a genus of parasitoid wasps associated with insect hosts. The species has been recorded from multiple states in the southeastern and eastern United States.
Brassicogethes cleominis
pollen beetle
Brassicogethes cleominis is a pollen beetle in the family Nitidulidae, a group of beetles commonly associated with flowers and pollen feeding. The species was described by Easton in 1959. It is known from North America, with records from the Canadian provinces of Alberta, British Columbia, and Manitoba. As a member of the genus Brassicogethes, it is likely associated with plants in the family Cleomaceae, suggested by its specific epithet.
Brassicogethes simplipes
pollen beetle
Brassicogethes simplipes is a pollen beetle in the family Nitidulidae, originally described as Meligethes simplipes by Easton in 1947. It is native to North America with confirmed records from eastern Canadian provinces including New Brunswick, Nova Scotia, and Ontario. As a member of the genus Brassicogethes, it is associated with pollen-feeding habits common to this group.
Brathinus
Brathinus is a genus of rove beetles in the family Staphylinidae, distributed across North America and East Asia (Japan, China). The genus is distinguished from typical staphylinids by its unusually long elytra that cover nearly the entire abdomen, rather than leaving most abdominal segments exposed. Six species are currently recognized, with three described from North America and three from Japan. The genus was established by LeConte in 1852.
Brathinus nitidus
ocellate rove beetle
Brathinus nitidus is a small rove beetle species in the family Staphylinidae, described by J.L. LeConte in 1852. It belongs to the subfamily Omaliinae and is characterized by the presence of ocelli—simple eyes in addition to the compound eyes—hence its common name 'ocellate rove beetle'. The species is native to eastern North America, with documented occurrences in both the United States and Canada.
Brathinus varicornis
Brathinus varicornis is a species of rove beetle in the family Staphylinidae, subfamily Omaliinae. It was described by John Lawrence LeConte in 1852. The species occurs in northeastern North America, with records from Canada and the northeastern United States. Very few observations of this species have been documented, with only two records in iNaturalist as of the data cutoff.
Brephidium exilis
Western Pygmy Blue, Pygmy Blue
Brephidium exilis, commonly known as the Western Pygmy Blue, is the smallest butterfly species in North America. Despite its diminutive size, it is widespread and relatively common across its range, though often overlooked due to its minute stature. The species belongs to the family Lycaenidae (gossamer-winged butterflies) and is recognized as a synonym of Brephidium exile.
Brephidium pseudofea
Eastern Pygmy-Blue
Brephidium pseudofea, commonly known as the Eastern Pygmy-Blue, is one of the smallest butterflies in North America. It belongs to the family Lycaenidae and is closely related to the Western Pygmy-Blue (Brephidium exilis), from which it can be distinguished by distribution and subtle morphological differences. The species is associated with coastal and salt marsh habitats in the eastern United States.
Breviperna placida
Breviperna placida is a species of stiletto fly in the family Therevidae, originally described by Coquillett in 1894 as Psilocephala placida. Stiletto flies are a diverse group of predatory flies, though specific biological details for this species remain poorly documented. The genus Breviperna is part of the therevid fauna of North America.
Brochymena arborea
rough stink bug, tree stink bug
Brochymena arborea is a North American stink bug species in the family Pentatomidae, commonly known as the rough stink bug or tree stink bug. It is one of approximately 21-23 Brochymena species found north of Mexico. The species exhibits remarkable bark-mimicking camouflage and overwinters as an adult, typically remaining outdoors under loose bark rather than entering human structures. It is frequently confused with the invasive Brown Marmorated Stink Bug but is ecologically distinct and not considered a pest.
Brochymena cariosa
Brochymena cariosa is a native North American stink bug in the family Pentatomidae. Like other members of the genus Brochymena, it is a rough or tree stink bug with cryptic coloration resembling lichen-mottled bark. The species is arboreal and overwinters as an adult, typically remaining outdoors under loose bark rather than entering structures.
Brochymena dilata
Brochymena dilata is a species of rough stink bug in the family Pentatomidae, described by Ruckes in 1939. It is one of 20 species retained in the genus Brochymena following the 1992 revision by Larivière, which redefined the genus and erected the new genus Parabrochymena for 10 related taxa. As a member of the endemic New World genus Brochymena, B. dilata exhibits the cryptic bark-like appearance typical of rough stink bugs. Like congeners, it is not considered an agricultural pest and is primarily associated with woody vegetation.
Brochymena diluta
Brochymena diluta is a species of rough stink bug in the family Pentatomidae, endemic to North America. Originally described by Blatchley as a subspecies (Brochymena barberi diluta), it was reclassified as a full species within the genus Brochymena following a comprehensive taxonomic revision that split the former broader genus into two genera: Brochymena (20 species) and the newly erected Parabrochymena (10 species). As with other Brochymena species, it is cryptically colored and primarily arboreal.
Brochymena florida
Brochymena florida is a species of stink bug in the family Pentatomidae, native to North America. It belongs to a genus of native stink bugs that are often mistaken for the invasive brown marmorated stink bug (Halyomorpha halys). The species was described by Ruckes in 1939. Like other members of Brochymena, it is not considered a significant agricultural pest.
Brochymena lineata
rough stink bug
Brochymena lineata is a species of rough stink bug in the family Pentatomidae, native to North America. Like other members of the genus Brochymena, it exhibits cryptic coloration that mimics lichen-mottled bark, providing effective camouflage against tree trunks. The species was described by Ruckes in 1939. As with congeners, it is not considered an agricultural or household pest.
Brochymena myops
rough stink bug, tree stink bug
Brochymena myops is a species of rough stink bug native to North America, belonging to the genus Brochymena commonly known as "tree stink bugs" for their bark-like camouflage. The species ranges from Quebec to Florida and westward through the central United States to Texas. Adults are active during warm periods throughout the year, including winter sunny days, and are frequently mistaken for the invasive brown marmorated stink bug. Like other Brochymena species, B. myops is not considered an agricultural or household pest.
stink-bugnativepredatorypine-forestcamouflagewinter-activenon-pestrough-stink-bugtree-stink-bugHemipteraPentatomidaeBrochymenaNorth-Americacentral-United-Statessoutheastern-United-Statesconifer-associatedbark-mimicryoverwintering-adultsingle-generationdecaying-wood-inhabitantbeneficial-insectHalyiniStål-1872Heteropteratrue-bugBrochymena sulcata
rough stink bug, tree stink bug
Brochymena sulcata is a species of rough stink bug in the family Pentatomidae, native to North America. Adults exhibit cryptic coloration that closely resembles lichen-mottled tree bark, providing effective camouflage against predation. The species overwinters as adults, typically remaining outdoors beneath loose bark or in other sheltered locations. Like other members of the genus, it is not considered an agricultural or household pest.
Brooksetta
Brooksetta is a genus of plant bugs in the family Miridae, established by Kelton in 1979. The genus contains approximately 13 described species, all native to North America. These insects are small, soft-bodied true bugs within the order Hemiptera. As members of Miridae, they possess piercing-sucking mouthparts characteristic of the family.
Brooksetta althaeae
Hollyhock Plant Bug
Brooksetta althaeae, commonly known as the hollyhock plant bug, is a species of plant bug in the family Miridae. The species was described by Hussey in 1924. It is found in North America, with confirmed records from Michigan. The common name suggests an association with hollyhock plants (Alcea species), though specific ecological relationships remain poorly documented.
Broscodera insignis
Broscodera insignis is a species of ground beetle in the family Carabidae, subfamily Broscinae. It was originally described as Miscodera insignis by Mannerheim in 1852 and later transferred to the genus Broscodera. The species is documented from North America, with distribution records including Alaska, Canada, and the contiguous United States. As a member of the subfamily Broscinae, it belongs to a group of ground beetles often associated with cool, moist habitats.
Broscus cephalotes
coastal ground beetle
Broscus cephalotes is a nocturnal, flightless ground beetle in the family Carabidae. It is native to coastal regions of temperate Europe and western Siberia, and was introduced to eastern Canada around 1975, subsequently spreading into the United States. The species is recognized as beneficial in agricultural contexts due to its predatory habits.
Bruchomorpha
Bruchomorpha is a genus of planthoppers in the family Caliscelidae, first described by Newman in 1838. These insects belong to the superfamily Fulgoroidea and are characterized as sap-sucking hemipterans. The genus is part of the tribe Peltonotellini within the subfamily Caliscelinae. Observations of Bruchomorpha have been documented across North America, particularly in the United States.
Bruchomorpha abrupta
Bruchomorpha abrupta is a species of planthopper in the family Caliscelidae, first described by Ball in 1935. It belongs to a genus characterized by distinctive morphological features typical of this group of fulgoromorph hemipterans. The species has been documented across a broad geographic range in North America, with records from Colorado to Florida. As a member of the Caliscelidae, it is part of a family commonly known as piglet bugs or false planthoppers, though specific biological details for this species remain limited in the available literature.
Bruchomorpha decorata
Decorated Piglet Bug
Bruchomorpha decorata is a planthopper species in the family Caliscelidae, commonly known as the Decorated Piglet Bug. It was described by Metcalf in 1923. The species belongs to the genus Bruchomorpha, a group of small, often compact fulgoroid insects sometimes referred to as 'piglet bugs' due to their rounded body shape. Records indicate presence in the southwestern United States and central Mexico.
Bruchomorpha pallidipes
Bruchomorpha pallidipes is a planthopper species in the family Caliscelidae, first described by Stål in 1862. It is one of several species in the genus Bruchomorpha, which belongs to the tribe Peltonotellini. The species has been recorded from multiple U.S. states including California, Alabama, Colorado, Delaware, and the District of Columbia. Like other caliscelid planthoppers, it is associated with grassy and herbaceous habitats.
Bruchomorpha tenebrosa
Bruchomorpha tenebrosa is a species of planthopper in the family Caliscelidae, first described by Doering in 1940. It belongs to the tribe Peltonotellini within the subfamily Caliscelinae. The genus Bruchomorpha is part of the diverse Fulgoroidea superfamily, commonly known as planthoppers. This species has been recorded from Florida, though detailed biological information remains limited in the available literature.
Bruggmanniella bumeliae
Bumelia gall midge
Bruggmanniella bumeliae is a gall midge species in the family Cecidomyiidae, commonly known as the Bumelia gall midge. The species induces galls on plants in the genus Sideroxylon (formerly Bumelia), which includes species commonly called gum bully or false buckthorn. It was first described by Felt in 1907. The species has been documented across multiple observations, with iNaturalist recording approximately 470 observations, suggesting it is relatively well-documented among gall midges.
Brumoides histrio
Lepine Lady Beetle
Brumoides histrio is a small lady beetle in the family Coccinellidae, commonly known as the Lepine Lady Beetle. Adults measure 2.75–4.0 mm in length. The species is native to North America, with documented records from Utah to Arizona and southern California. Its color pattern resembles that of the related species Brumoides septentrionis.
Brumoides septentrionis
Winter Lady Beetle
Brumoides septentrionis is a small lady beetle (Coccinellidae) native to North America. Adults measure approximately 2.9–3 mm in length. The species exhibits distinctive coloration with black markings on a yellowish-brown to red elytral background. It is known by the common name 'Winter Lady Beetle' and comprises three recognized subspecies with distinct geographic ranges across North America.
Brumoides septentrionis hogei
Brumoides septentrionis hogei is a subspecies of lady beetle (Coccinellidae) described by Gorham in 1894. It belongs to the genus Brumoides, a group of small, elongate lady beetles often associated with scale insects. The subspecific designation indicates geographic or morphological differentiation within the widespread species B. septentrionis. Very few observations exist in citizen science databases, suggesting either genuine rarity or undercollection.
Brumus quadripustulatus
Cream-spot ladybird, Cream-spot lady beetle
Brumus quadripustulatus is a small ladybird beetle native to Europe and northern Asia, now established in North America. It is recognized by its distinctive cream-colored spots on a dark, nearly black background. The species inhabits various wooded and shrubby environments and has been observed preying on aphids and scale insects.
Bruneria
slant-faced grasshoppers
Bruneria is a genus of slant-faced grasshoppers in the subfamily Gomphocerinae, native to northwestern North America. The genus contains at least three described species: Bruneria brunnea (Bruner slant-faced grasshopper), Bruneria shastana (Shasta slant-faced grasshopper), and Bruneria yukonensis (Yukon slant-faced grasshopper). These grasshoppers inhabit mountain meadows, mixedgrass prairies, and alpine tundra at elevations ranging from 1,600 to 11,100 feet. The best-studied species, B. brunnea, is primarily a grass-feeder that can become a serious pest during population irruptions.
Bruneria brunnea
Bruner slant-faced grasshopper, Bruner's Grasshopper
Bruneria brunnea is a medium-sized slant-faced grasshopper native to western North America. It inhabits mountain meadows, mixedgrass prairies, and alpine tundra at elevations from 1,600 to 11,100 feet. The species is a specialized grass and sedge feeder that becomes a serious rangeland pest during population irruptions. It has been documented to reach densities of 15 adults per square yard and contributed to a historic outbreak covering 2,000 square miles in British Columbia in 1920.
Brunneria
stick mantis, Brunner's stick mantis
Brunneria is a genus of slender, stick-like praying mantises native to the Americas. The genus contains six recognized species, with B. borealis being particularly notable as the only known obligate parthenogenetic praying mantis—reproducing exclusively asexually with no males ever observed. This species has spread across more than 2,400 km of coastal North America from a hypothesized single female introduction. Other species in the genus, all South American, reproduce facultatively with both sexes present.
Bryelmis idahoensis
riffle beetle
Bryelmis idahoensis is a species of riffle beetle in the family Elmidae, described by Barr in 2011. Riffle beetles are aquatic insects that inhabit fast-flowing streams and rivers. The species is known from North America, with its specific epithet suggesting a connection to Idaho. As with other members of Elmidae, it likely has an aquatic larval stage and a partially aquatic adult stage, though specific biological details for this species remain undocumented in available sources.
Bryophacis smetanai
Bryophacis smetanai is a small rove beetle (Staphylinidae: Mycetoporinae) described by Campbell in 1993 as part of a comprehensive taxonomic revision of North American Bryophacis. It belongs to the tribe Bolitobiini, a group of mycophagous staphylinids associated with fungal substrates. The species was established based on morphological examination of specimens from across northern North America.
Bryoporus testaceus
Bryoporus testaceus is a rove beetle (family Staphylinidae, subfamily Mycetoporinae) described by John Lawrence LeConte in 1863. The species exhibits the characteristic abbreviated elytra typical of rove beetles, leaving most of the abdomen exposed. It has been recorded across a broad geographic range in North America, from eastern Canada through the eastern and central United States. Specific ecological details remain limited in published literature.
Bucculatrix adelpha
Bucculatrix adelpha is a small moth in the family Bucculatricidae, described by Annette Frances Braun in 1963. The species is known from limited records in eastern North America. Adults are active in early summer, and larvae feed on Aster species.
Bucculatrix agnella
Bucculatrix agnella is a species of minute moth in the family Bucculatricidae, first described by James Brackenridge Clemens in 1860. The species is known from scattered records across eastern and central North America, with a wingspan of approximately 7 mm. Like other members of its genus, it is commonly referred to as a 'ribbed cocoon-maker moth' due to the distinctive ribbed structure of its larval cocoon.
Bucculatrix ambrosiaefoliella
Bucculatrix ambrosiaefoliella is a small moth species in the family Bucculatricidae, first described by V. T. Chambers in 1875. It is distributed across North America from California to the northeastern United States. The species is notable for its leaf-mining larval stage and distinctive ribbed cocoon. Adults are active in late summer and autumn, with evidence suggesting they overwinter in the adult stage.
Bucculatrix anaticula
Bucculatrix anaticula is a microlepidopteran moth in the family Bucculatricidae, first described by Annette Frances Braun in 1963. The species is known from only a handful of records in eastern North America, specifically from Ontario, Canada and Kentucky, USA. Like other members of the genus, it is commonly referred to as a "ribbed cocoon-maker moth" due to the distinctive ribbed structure of its larval cocoon. The genus Bucculatrix contains approximately 300 described species, most of which are poorly known and difficult to identify without examination of genitalia.
Bucculatrix copeuta
Bucculatrix copeuta is a small moth in the family Bucculatricidae, first described by Edward Meyrick in 1919. The species is known from limited records in North America, specifically Ontario, Canada and Maine, USA. Larvae of this genus are known as "ribbed cocoon-makers" and construct distinctive ribbed cocoons on host plants. The larval host for B. copeuta has been tentatively associated with Prunus pensylvanica.
Bucculatrix coronatella
Crowned Bucculatrix Moth
Bucculatrix coronatella is a small moth in the family Bucculatricidae, first described by Clemens in 1860. It is commonly known as the Crowned Bucculatrix Moth. The species is found in eastern North America, with records spanning from New England through the mid-Atlantic states and into the Southeast. Like other members of its genus, it is referred to as a 'ribbed cocoon-maker moth' due to the distinctive ribbed structure of its larval cocoon.
Bucculatrix insolita
Bucculatrix insolita is a species of ribbed cocoon-making moth in the family Bucculatricidae. It was described by Annette Frances Braun in 1918 and is known from California, North America. Like other members of its genus, it is a small moth with distinctive larval habits.
Bucculatrix inusitata
Cedar Bucculatrix
Bucculatrix inusitata is a minute moth in the family Bucculatricidae, described by Annette Frances Braun in 1963. It is one of the 'ribbed cocoon-maker' moths, named for the distinctive cocoon structure constructed by larvae. The species is known from a limited geographic range in northeastern North America, with records from Quebec to New Jersey. Adults have a wingspan of approximately 9.5–10 mm.