Nearctic
Guides
Cymatodera neomexicana
New Mexican checkered beetle
Cymatodera neomexicana is a species of checkered beetle in the family Cleridae, first described by Knull in 1934. It belongs to the subfamily Tillinae, which includes predatory clerids that typically feed on other insects. The species is distributed across Central America and North America, though specific details about its biology and ecology remain poorly documented in published literature.
Cymindis punctigera
Cymindis punctigera is a ground beetle species described by LeConte in 1851. It is currently treated as a synonym of Pinacodera punctigera. The species belongs to the subfamily Lebiinae within the family Carabidae. Records indicate occurrence in Mexico and the United States.
Cymus angustatus
Cymus angustatus is a species of true bug in the family Cymidae, described by Carl Stål in 1874. It belongs to the lygaeoid group of heteropteran insects within the Pentatomomorpha. The species has been documented in parts of North America and Central America, with records from the United States and the broader Eastern Nearctic region. As a member of Cymidae, it shares the family characteristic of relatively small size and oval body form typical of this seed bug lineage.
Cynomya cadaverina
Shiny Blue Bottle Fly
Cynomya cadaverina, commonly known as the shiny blue bottle fly, is a blow fly in the family Calliphoridae. Adults are medium-sized with distinctive metallic blue coloration and are attracted to carrion, particularly in advanced stages of decomposition. The species is considered forensically significant for estimating post-mortem intervals, as its predictable life cycle and cool-weather activity patterns provide temporal clues in death investigations. It is native to the Nearctic region, with highest abundance in southern Canada and the northern United States.
Cyphomyrmex minutus
Minute Fungus-farming Ant
Cyphomyrmex minutus is a species of fungus-farming ant in the tribe Attini, characterized by its small size and specialized cultivation of fungal gardens. The species is native to the Americas and has been documented across a broad geographic range from the United States through Central America to northern South America. Like other members of its genus, it maintains obligate mutualistic relationships with cultivated fungi, which serve as the primary food source for the colony. The species is one of numerous Cyphomyrmex taxa that have been historically understudied due to their cryptic nesting habits and small worker size.
Cyrtolobus
Cyrtolobus is a genus of treehoppers (family Membracidae) comprising more than 50 described species distributed across North and Central America. Like other members of the tribe Smiliini, species in this genus possess enlarged and often elaborately shaped pronota that extend backward over the body. The genus was established by Goding in 1892 and remains taxonomically active, with species identification relying primarily on pronotal morphology.
Cyrtolobus
Cyrtolobus n-sp-fl is an undescribed species of treehopper in the tribe Smiliini, collected from Florida. The genus Cyrtolobus is part of the diverse Nearctic fauna of treehoppers, characterized by pronounced pronotal modifications. Like other members of Membracidae, this species possesses the enlarged and often elaborately shaped pronotum that extends over the thorax. The specific epithet 'n-sp-fl' indicates it is a new species from Florida awaiting formal description.
Cyrtolobus acuminatus
Cyrtolobus acuminatus is a species of treehopper in the family Membracidae, first described by L. B. Woodruff in 1924. It belongs to the tribe Smiliini, a group characterized by pronounced pronotal modifications. The species is known from the midwestern United States with records extending into the northeastern region.
Cyrtolobus acutus
Cyrtolobus acutus is a Nearctic treehopper species in the tribe Smiliini, first described from the southwestern United States in 1908. The genus Cyrtolobus comprises approximately 15 species distributed primarily in eastern and southwestern North America, characterized by their distinctive pronotal morphology. This species represents one of the less commonly encountered members of the genus, with specimen records indicating sporadic occurrence across arid and semi-arid regions.
Cyrtolobus coronatus
Cyrtolobus coronatus is a species of treehopper in the family Membracidae, described by Ball in 1932. Treehoppers in this genus are characterized by their enlarged, often elaborately shaped pronotum. The species belongs to the tribe Smiliini, which is primarily distributed in the Nearctic region.
Cyrtolobus discoidalis
Cyrtolobus discoidalis is a Nearctic treehopper species in the family Membracidae, tribe Smiliini. Like other members of its genus, it possesses an expanded pronotum characteristic of treehoppers. The species has been documented in the eastern United States.
Cyrtolobus flavolatus
Cyrtolobus flavolatus is a species of treehopper in the family Membracidae, described by Woodruff in 1924. As a member of the tribe Smiliini, it possesses the enlarged, often elaborately modified pronotum characteristic of this family. The species occurs in eastern North America, with records from New York, Pennsylvania, and North Carolina.
Cyrtolobus frigidus
Cyrtolobus frigidus is a species of treehopper in the family Membracidae, tribe Smiliini. It is known from the southwestern United States, specifically Utah and Arizona. Like other members of its genus, it possesses the enlarged, often elaborately shaped pronotum characteristic of treehoppers. The specific epithet 'frigidus' may refer to habitat associations with cooler or higher elevation environments, though this has not been explicitly documented.
Cyrtolobus gloveri
Cyrtolobus gloveri is a Nearctic treehopper species in the family Membracidae, described by Goding in 1893. It belongs to the tribe Smiliini, a group of treehoppers characterized by pronotal modifications and primarily distributed in eastern and central North America. The species is part of the genus Cyrtolobus, which contains approximately 15 described species in the United States and Canada.
Cyrtolobus limus
Cyrtolobus limus is a North American treehopper species in the family Membracidae, described by Van Duzee in 1908. It belongs to the tribe Smiliini, a predominantly Nearctic group characterized by distinctive pronotal modifications. The species occurs in western and midwestern United States, with records from California, Colorado, and Ohio. Like other Cyrtolobus species, it possesses an expanded pronotum that extends over the thorax, though specific morphological details distinguishing it from congeners are not well documented in available sources.
Cyrtolobus pallidifrontis
Cyrtolobus pallidifrontis is a Nearctic treehopper species in the tribe Smiliini, characterized by its expanded pronotum typical of the family Membracidae. The specific epithet 'pallidifrontis' refers to the pale or light-colored front of the head. Like other members of its genus, it exhibits the pronounced pronotal modifications that distinguish treehoppers from their close relatives, the leafhoppers. The species has been documented from multiple eastern and central U.S. states.
Cyrtolobus sculptus
Cyrtolobus sculptus is a species of treehopper in the family Membracidae, first described by Fairmaire in 1846. Treehoppers in this genus are characterized by their enlarged, often elaborately shaped pronotum that extends over the body. Members of Cyrtolobus are primarily Nearctic in distribution. The species is recognized within the tribe Smiliini, a group known for diverse pronotal morphologies.
Cyrtolobus woodruffi
Cyrtolobus woodruffi is a species of treehopper in the family Membracidae, tribe Smiliini, described by Ball in 1932. Like other members of the genus Cyrtolobus, it possesses a modified pronotum characteristic of treehoppers. The species has been documented in Arizona based on distribution records. Very little specific information is available for this particular species, though it shares the general biology of Nearctic Smiliini treehoppers, which feed on woody plants and often exhibit pronotal modifications.
Cyrtomenus crassus
burrowing bug
Cyrtomenus crassus is a species of burrowing bug in the family Cydnidae, first described by Walker in 1867. As a member of the burrowing bug family, it is adapted to fossorial life in soil and associated substrates. The species has a broad geographic distribution spanning the Caribbean, Central America, and North America.
Cyrtopogon curtistylus
Cyrtopogon curtistylus is a species of robber fly (family Asilidae) described by Curran in 1923. As a member of the genus Cyrtopogon, it belongs to a group of predatory flies known for their agile flight and ambush hunting behavior. The specific epithet "curtistylus" refers to a shortened male terminalia structure. Beyond taxonomic classification, detailed natural history information for this species remains limited in published literature.
Cyrtopogon marginalis
Shiny-edged Bandit
Cyrtopogon marginalis is a species of robber fly (family Asilidae), commonly known as the Shiny-edged Bandit. Robber flies are predatory insects that capture other arthropods in flight. This species belongs to the genus Cyrtopogon, a group of robber flies found primarily in North America. The specific epithet 'marginalis' likely refers to distinctive marginal markings on the wings or body edges, a common naming pattern in this genus.
Cyrtopogon pulcher
Cyrtopogon pulcher is a species of robber fly (family Asilidae) described by Back in 1909. It belongs to the diverse genus Cyrtopogon, which comprises predatory flies found primarily in North America. Robber flies in this genus are generally small to medium-sized with distinctive facial features and predatory habits. The species name "pulcher" (Latin for "beautiful") likely refers to some aspect of its coloration or morphology.
Dacnochilus angularis
Dacnochilus angularis is a rove beetle (family Staphylinidae, subfamily Paederinae) described by Erichson in 1840. It belongs to the tribe Lathrobiini within the diverse rove beetle assemblage. The species has been recorded from the southern United States through Central America, with confirmed occurrences in Alabama, Texas, Mexico, Guatemala, Honduras, Nicaragua, and Costa Rica. Records from Colombia and Venezuela appear to be erroneous. Like other members of Staphylinidae, this species exhibits the characteristic shortened elytra that leave most of the abdomen exposed.
Dactylolabis cubitalis
Dactylolabis cubitalis is a species of limoniid crane fly described by Osten Sacken in 1869. It is a small, delicate fly belonging to a genus characterized by distinctive leg modifications. The species has a documented but restricted distribution in the eastern United States.
Dactylolabis hudsonica
Dactylolabis hudsonica is a crane fly species in the family Limoniidae. It inhabits madicolous environments—thin water films on vertical or overhanging rock surfaces—in eastern North America. The species was described by Alexander in 1931. Its larval and pupal stages have been documented, and larvae can be distinguished from the related D. montana using morphological characters.
Dactylolabis montana
Dactylolabis montana is a species of limoniid crane fly inhabiting madicolous environments in eastern North America. The species develops in thin water films on rock surfaces, with distinct larval and pupal stages described. It occurs from Ontario and Newfoundland south to Kansas, Arkansas, Mississippi, Tennessee, and South Carolina.
Dactylolabis vestigipennis
Dactylolabis vestigipennis is a small crane fly species in the family Limoniidae, first described by Charles Paul Alexander in 1950. The species is known from limited observations in the southwestern United States. Like other limoniid crane flies, it belongs to a diverse family of delicate, long-legged flies often found in moist habitats.
Dactylomyia
Dactylomyia is a genus of long-legged flies in the family Dolichopodidae, comprising seven recognized species distributed across eastern North America, Central America, the Lesser Antilles, and the Hawaiian Islands. The genus was established by Aldrich in 1894 and belongs to the tribe Dactylomyiini within the subfamily Neurigoninae. One species, D. vockerothi, represents an accidental introduction to Midway Atoll in the Hawaiian Islands, likely originating from the Neotropics via the main Hawaiian islands.
Daltonia condita
Daltonia condita is a leafhopper species described from Texas in 1993. It belongs to the genus Daltonia within the leafhopper family Cicadellidae, subfamily Deltocephalinae. The species is known from limited collection records in Texas. As with other members of the genus, it is presumed to feed on plant phloem via piercing-sucking mouthparts, though specific host associations remain undocumented.
Dasychira mescalera
Dasychira mescalera is a species of tussock moth in the family Erebidae, described by Alexander Douglas Campbell Ferguson in 1977 (published 1978). It occurs in the southwestern United States, specifically in New Mexico, Texas, and Colorado. The species belongs to the genus Dasychira, a group of moths characterized by prominent tufted setae on their larvae.
Dasycorixa rawsoni
Dasycorixa rawsoni is a species of water boatman described by Hungerford in 1948. It belongs to the family Corixidae, a group of aquatic true bugs adapted to life in freshwater environments. The species is known from North America and is classified within the tribe Glaenocorisini.
Daulia arizonensis
Daulia arizonensis is a small moth in the family Crambidae, first described by Eugene G. Munroe in 1957. The species has a wingspan of approximately 18 mm. It exhibits a disjunct distribution pattern, occurring in the southwestern United States (Arizona and Texas) and extending southward through Mexico to Argentina.
Dellacasiellus concavus
Dellacasiellus concavus is a species of scarab beetle in the family Scarabaeidae, subfamily Aphodiinae. It was described by Say in 1823. This species belongs to a group of beetles commonly known as aphodiine dung beetles, though specific ecological details for this particular species remain limited in available sources.
Dellacasiellus fucosus
Dellacasiellus fucosus is a species of scarab beetle in the subfamily Aphodiinae, first described by Schmidt in 1917. It belongs to a genus of aphodiine dung beetles found in arid and semi-arid regions of western North America. The species has been recorded from scattered localities across the southwestern United States and northern Mexico.
Dellacasiellus griffini
Dellacasiellus griffini is a species of scarab beetle in the family Scarabaeidae, subfamily Aphodiinae. It was described by Gordon and Skelley in 2007 and is currently known only from Texas in the southern United States. The species belongs to a small genus of aphodiine dung beetles. Very few observations exist in public databases.
Dellacasiellus laevigatus
Dellacasiellus laevigatus is a small scarab beetle in the subfamily Aphodiinae, first described by Haldeman in 1848. The genus Dellacasiellus was established to accommodate species formerly placed in related genera such as Aphodius. This species occurs in the southeastern United States. As a member of the Aphodiinae, it is presumed to be associated with dung or decaying organic matter, though specific ecological details remain poorly documented.
Dellacasiellus pseudofucosus
Dellacasiellus pseudofucosus is a small scarab beetle in the subfamily Aphodiinae, described by Gordon and Skelley in 2007. The species occurs in the southwestern United States and northwestern Mexico, with records from California and Baja California. As a member of the Aphodiinae, it likely functions as a detritivore associated with mammal dung. The specific epithet 'pseudofucosus' indicates morphological similarity to D. fucosus.
Dellacasiellus ruficlarus
Dellacasiellus ruficlarus is a species of dung beetle in the subfamily Aphodiinae, originally described by Fall in 1932. It belongs to a small genus of aphodiine scarabs distributed across western North America. The species has been documented in arid and semi-arid regions from Canada to Mexico.
Deltocephalus mystax
Deltocephalus mystax is a species of leafhopper in the family Cicadellidae, described by Hamilton and Ross in 1975. The species epithet 'mystax' refers to a beard or moustache-like structure, though specific morphological details of this feature are not documented in available sources. It belongs to the large and diverse genus Deltocephalus within the subfamily Deltocephalinae.
Deltochilum gibbosum
humpback dung beetle
Deltochilum gibbosum, commonly known as the humpback dung beetle, is a species of dung beetle in the family Scarabaeidae. It belongs to the subgenus Hybomidium and is found in the southeastern United States. The species is associated with dung, particularly from wild hogs. A former variety, D. gibbosum var. sublaeve, has been reclassified as a separate species D. sublaeve.
Deltochilum scabriusculum
Deltochilum scabriusculum is a species of dung beetle in the family Scarabaeidae, distributed from the southern United States through Mexico and Central America. The subspecies D. s. montanum was synonymized with the nominate form in a 2012 taxonomic revision. Like other members of its genus, it belongs to a group historically associated with dung-feeding behavior, though specific ecological studies for this species are lacking.
Deltometopus
Deltometopus is a genus of false click beetles (Coleoptera: Eucnemidae) in the subfamily Macraulacinae and tribe Macraulacini. The genus is distinguished by its Nearctic distribution and includes species such as Deltometopus amoenicornis. Larval morphology has been described for at least one species, indicating development in decaying wood. The genus is accepted in coleopteran taxonomy with authorship attributed to Bonvouloir (1871), though a later homonym was proposed by Williams (1977) in Hemiptera.
Deltometopus amoenicornis
Lovely-horned False Click Beetle
A Nearctic species of false click beetle in the family Eucnemidae. The mature larva has been described, though detailed biological information remains limited. Adults are occasionally encountered and photographed by naturalists.
Derallus altus
Derallus altus is a water scavenger beetle in the family Hydrophilidae, distributed across the Americas from the United States through Central and South America to the Caribbean. As a member of the tribe Berosini, it inhabits aquatic or semi-aquatic environments where it contributes to nutrient cycling through scavenging behavior. The species was described by John Lawrence LeConte in 1855 and has been recorded in at least 12 U.S. states and multiple countries across the Neotropics.
Derostenus freemani
Derostenus freemani is a species of parasitoid wasp in the family Eulophidae, first described from the Nearctic region in 1973. It is a solitary endoparasitoid of Stigmella larvae (Lepidoptera: Nepticulidae), minute moths commonly known as pygmy or midget moths. The species was originally placed in the subgenus Nearctostenus, though subsequent revision abandoned this subgeneric division in favor of species-group classification, placing D. freemani in the gemmeus group alongside European species.
Desmiphora aegrota
Desmiphora aegrota is a species of longhorn beetle in the family Cerambycidae, first described by Henry Walter Bates in 1880. The species belongs to the genus Desmiphora, an exclusively New World group characterized by distinctive tufts of erect hairs. It is known from the southern United States and Panama, with records also from Costa Rica and Guatemala. As with other members of its genus, it is likely associated with woody plants, though specific biological details remain poorly documented.
Deuterollyta majuscula
Deuterollyta majuscula is a species of snout moth in the family Pyralidae, subfamily Epipaschiinae. It was described by Herrich-Schäffer in 1871 and occurs across a broad geographic range including the southern United States, Caribbean, and Central America. The species was previously placed in the genus Jocara but has been reassigned to Deuterollyta based on taxonomic revision.
Diacme phyllisalis
Rusty Diacme
Diacme phyllisalis is a small crambid moth first described by Francis Walker in 1859. It occurs across the Caribbean and into the southeastern United States, with records from Jamaica, Cuba, Mexico, Florida, and Georgia. The species is known in English as the Rusty Diacme, though detailed biological information remains limited.
Dialytellus
Dialytellus is a genus of aphodiine dung beetles in the family Scarabaeidae, established by Brown in 1929. The genus comprises at least three described species distributed in the Nearctic region. As members of the Aphodiinae subfamily, these beetles are associated with dung decomposition. The genus is relatively small and understudied, with limited ecological data available.
Dialytes truncatus
Dialytes truncatus is a species of aphodiine dung beetle in the family Scarabaeidae. It is native to North America, with confirmed records from the United States and Canada. As a member of the Aphodiinae subfamily, it is associated with dung habitats. The species was first described by Melsheimer in 1845.