Osten-sacken
Guides
Cyrtopogon evidens
Cyrtopogon evidens is a species of robber fly (family Asilidae) first described by Osten Sacken in 1877. It belongs to a genus of predatory flies known for their agile flight and ambush hunting behavior. Like other Asilidae, this species is likely an active predator of other insects, though specific natural history details remain poorly documented in the available literature.
Exoprosopa parda
Exoprosopa parda is a species of bee fly in the family Bombyliidae, first described by Osten Sacken in 1886. Bee flies in this genus are parasitoids, with larvae typically developing in the nests of solitary bees or wasps. The species is poorly documented in published literature, with only 19 observations recorded on iNaturalist.
Gonomyia sulphurella
Gonomyia sulphurella is a small crane fly in the family Limoniidae, described by Osten Sacken in 1860. The species is characterized by its yellowish coloration, reflected in its specific epithet 'sulphurella' (sulfur-yellow). It occurs across a broad range of eastern and central North America, from southern Canada through the eastern United States. Like other limoniid crane flies, it is a delicate, long-legged fly associated with moist terrestrial habitats.
Oedicarena persuasa
Oedicarena persuasa is a species of tephritid fruit fly described by Osten Sacken in 1877. It belongs to the genus Oedicarena within the subfamily Trypetinae. The species is part of the tribe Carpomyini, a group of fruit flies often associated with host plants in the family Asteraceae. Available records indicate limited observational data, with 18 observations documented on iNaturalist.