Stenopogoninae
Guides
Dioctria henshawi
Dioctria henshawi is a species of robber fly in the family Asilidae, first described by Johnson in 1918. The genus Dioctria belongs to the subfamily Stenopogoninae and contains small to medium-sized predatory flies. Species in this genus are among the more diminutive members of the robber fly family, typically measuring under 10 mm in length. Information regarding the specific biology and distribution of D. henshawi remains limited in available sources.
Dioctria pleuralis
Dioctria pleuralis is a species of robber fly in the family Asilidae, described by Banks in 1917. The genus Dioctria belongs to the subfamily Stenopogoninae, a group characterized by small to medium-sized predatory flies. Species in this genus are among the more diminutive robber flies in North America.
Dioctria wilcoxi
Dioctria wilcoxi is a small robber fly (Diptera: Asilidae) described by Adisoemarto and Wood in 1975. It belongs to the genus Dioctria, a group of diminutive predatory flies within the subfamily Stenopogoninae. The species is currently treated as a synonym of Dioctria tenuis. Like other members of this genus, it is among the smallest North American robber flies, measuring approximately 6–8 mm in length. Species in this genus are morphologically similar to Cerotainia but can be distinguished by their shorter antennae and behavioral differences in perching habits.
Eudioctria
Eudioctria is a genus of small robber flies in the family Asilidae, established by Wilcox & Martin in 1941. The genus comprises approximately 14 described species, making it one of the more species-rich genera within the subfamily Stenopogoninae. Species in this genus are among the smallest North American robber flies, measuring only 6–8 mm in length. The genus is primarily distributed in western North America, though four species extend into eastern states.
Eudioctria albius
Eudioctria albius is a small robber fly species in the family Asilidae, measuring approximately 6–8 mm in length. It is one of four Eudioctria species occurring in eastern North America, with the genus being primarily western in distribution. The species belongs to the subfamily Stenopogoninae and is among the tiniest North American robber flies.
Eudioctria beameri
Eudioctria beameri is a small robber fly in the family Asilidae, subfamily Stenopogoninae. It belongs to a genus containing some of the smallest North American robber flies, with body lengths of only 6–8 mm. The species is primarily western in distribution, though some Eudioctria species extend into eastern North America. Like other robber flies, it is an active aerial predator that captures prey in flight.
Eudioctria brevis
Eudioctria brevis is a small species of robber fly in the family Asilidae, subfamily Stenopogoninae. It is one of four Eudioctria species occurring in eastern North America, with the genus primarily distributed in western United States. The species is among the smallest North American robber flies, measuring 6–8 mm in length. It was described by Banks in 1917.
Eudioctria denuda
Eudioctria denuda is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It belongs to a genus of small, compact robber flies measuring only 6–8 mm in length. The genus Eudioctria is primarily western in distribution, with only four of its fourteen species occurring in eastern North America. Species identification within the genus requires examination of facial gibbosities and assessment of pollinosity on body parts.
Eudioctria disjuncta
A small robber fly in the subfamily Stenopogoninae, measuring 6–8 mm in length. One of the tiniest North American robber flies, superficially resembling Cerotainia species but distinguished by shorter antennae and behavioral perching preferences. The genus Eudioctria is primarily western in distribution, with E. disjuncta being one of four eastern species.
Eudioctria dissimilis
Eudioctria dissimilis is a species of robber fly in the subfamily Stenopogoninae, described by Adisoemarto and Wood in 1975. The genus Eudioctria comprises some of the smallest North American robber flies, with body lengths of 6–8 mm. Species in this genus are primarily western in distribution, though E. dissimilis is one of four eastern species.
Eudioctria doanei
Eudioctria doanei is a small robber fly (family Asilidae) in the subfamily Stenopogoninae. It belongs to a genus of diminutive predatory flies measuring only 6–8 mm in length, making them among the smallest North American robber flies. The species was described by Melander in 1924. While specific details about this particular species are sparse, the genus Eudioctria is primarily western in distribution, with four of its fourteen species extending into eastern North America. Members of this genus are known to perch on flat leaves at the tops of small shrubs, distinguishing them behaviorally from similar-looking Cerotainia species that prefer twig-ends.
Eudioctria media
Eudioctria media is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It is one of approximately 14 species in the genus Eudioctria, a group of small predatory flies found primarily in western North America with a few species extending into eastern states. The genus is characterized by extremely small body size among robber flies, measuring only 6–8 mm in length.
Eudioctria monrovia
Eudioctria monrovia is a species of robber fly (family Asilidae, subfamily Stenopogoninae) described by Wilcox and Martin in 1941. The genus Eudioctria comprises some of the smallest North American robber flies, with adults measuring only 6–8 mm in length. Species in this genus are primarily western in distribution, though a few species extend into eastern North America. Like other robber flies, members of this genus are predatory as adults.
Eudioctria nitida
Eudioctria nitida is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It is one of the smallest North American robber flies, measuring approximately 6–8 mm in length. The genus Eudioctria contains 14 species, with most distributed in the western United States; four species (including E. nitida) extend into eastern North America. Species identification within the genus requires examination of facial gibbosities and pollinosity patterns.
Eudioctria propinqua
Eudioctria propinqua is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It is among the smallest North American robber flies, measuring approximately 6–8 mm in length. The species occurs in eastern North America and is one of four Eudioctria species found in the eastern United States.
Eudioctria sackeni
Eudioctria sackeni is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. The genus Eudioctria comprises among the smallest North American robber flies, measuring only 6–8 mm in length. Species in this genus superficially resemble Cerotainia (subfamily Laphriinae) but lack the extra-long antennae. Eudioctria is primarily a western U.S. genus, though four of its 14 species occur in eastern states.
Eudioctria unica
Eudioctria unica is a species of robber fly in the family Asilidae, described by Adisoemarto and Wood in 1975. It belongs to the subfamily Stenopogoninae and is among the smallest North American robber flies, measuring only 6–8 mm in length. The genus Eudioctria is primarily western in distribution, with only four species extending into eastern North America.
Ospriocerus minos
Ospriocerus minos is a species of robber fly in the family Asilidae, originally described by Osten Sacken in 1877. The species has been treated as a synonym of Stenopogon minos in some taxonomic databases, indicating ongoing taxonomic uncertainty. As a member of the subfamily Stenopogoninae, it belongs to a group of predatory flies characterized by their streamlined bodies and predatory habits. Very few observations of this species have been documented, with only a single iNaturalist record noted.
Ospriocerus tequilae
Ospriocerus tequilae is a species of robber fly in the family Asilidae, described by Martin in 1968. The genus Ospriocerus contains large, wasp-mimicking robber flies found in grassland habitats of western North America. The specific epithet 'tequilae' presumably refers to the type locality in Mexico. The species is currently treated as a synonym of Stenopogon tequilae in some taxonomic databases, reflecting ongoing taxonomic uncertainty in the classification of this group.
Stenopogon
Stenopogon is a large genus of robber flies in the family Asilidae, comprising at least 200 described species. Members of this genus belong to the subfamily Stenopogoninae and are distributed across multiple continents. The genus was established by Loew in 1847 and represents a diverse assemblage of predatory flies that share certain morphological and behavioral characteristics.
Stenopogon breviusculoides
Stenopogon breviusculoides is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. The species was described by Bromley in 1937. As a member of the Stenopogoninae, it belongs to a group of generally small to medium-sized robber flies. Robber flies in this subfamily are predatory insects that capture other arthropods in flight.
Stenopogon breviusculus
Stenopogon breviusculus is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It was described by Loew in 1872. As a member of the Stenopogoninae, it belongs to a group of generally small to medium-sized robber flies. Very few specific observations or biological details have been published for this particular species.
Stenopogon californiae
Stenopogon californiae is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. First described by Francis Walker in 1849, this species belongs to a genus of relatively small, predatory flies. Robber flies in this subfamily are characterized by their slender bodies and distinctive predatory behavior. Like other asilids, they are aerial predators that capture other insects in flight.
Stenopogon cazieri
Stenopogon cazieri is a species of robber fly in the family Asilidae, described by Brookman in 1941. The genus Stenopogon belongs to the subfamily Stenopogoninae, a group characterized by distinctive morphological features and predatory habits. Like other asilids, this species is presumed to be an aerial predator of other insects. Very little specific information has been published about this particular species beyond its original description and taxonomic placement.
Stenopogon engelhardti
Stenopogon engelhardti is a species of robber fly (family Asilidae) in the subfamily Stenopogoninae, described by Bromley in 1937. The genus Stenopogon belongs to a diverse group of predatory flies characterized by their aerial hunting behavior. Very little specific information is documented about this particular species beyond its taxonomic description.
Stenopogon inquinatus
Stenopogon inquinatus is a species of robber fly in the family Asilidae, subfamily Stenopogoninae. It has been studied for its behavioral thermoregulation in response to thermal variation. As a member of the Asilidae, it is presumed to be an aerial predator of other insects, though specific prey records for this species are not documented in the available sources.
Stenopogon lomae
Stenopogon lomae is a species of robber fly in the family Asilidae, described by Wilcox in 1971. As a member of the subfamily Stenopogoninae, it belongs to a group of generally small to medium-sized predatory flies. The genus Stenopogon is primarily distributed in western North America. Very little specific information is documented about this particular species.
Stenopogon tolandi
Stenopogon tolandi is a species of robber fly in the family Asilidae, subfamily Stenopogoninae, described by Wilcox in 1971. As a member of the genus Stenopogon, it belongs to a group of relatively small robber flies. The genus Stenopogon is part of the diverse Asilidae family, whose members are predatory flies known for their agile flight and piercing-sucking mouthparts used to capture other insects. No specific observations of this species have been documented in the provided sources.
Wilcoxia forbesi
Wilcoxia forbesi is a species of robber fly (Diptera: Asilidae: Stenopogoninae) described in 2019 from New Mexico. It belongs to the martinorum species group, characterized by specific structural features, seasonality patterns, and natural history traits. As a predatory fly, it has been documented capturing prey from at least four insect orders, with a particular emphasis on true bugs, beetles, wasps, and other flies.