''Hesperinus'' is a genus of flies and the sole genus in the

relict A relict is a surviving remnant of a natural phenomenon. Biology A relict (or relic) is an organism that at an earlier time was abundant in a large area but now occurs at only one or a few small areas. Geology and geomorphology In geology, a r ...

family Hesperinidae belonging to the

nematocera The Nematocera (the name means "thread-horns") are a suborder of elongated flies with thin, segmented antennae and mostly aquatic larvae. This group is paraphyletic and contains all flies but species from suborder Brachycera (the name means "sh ...

n infraorder

Bibionomorpha The Bibionomorpha are an infraorder of the suborder Nematocera. One of its constituent families, the Anisopodidae, is the presumed sister taxon to the entire suborder Brachycera. Several of the remaining families in the infraorder (those shown wi ...

. There are about 8 known species, nearly all from the Palaearctic region with one each from the

Nearctic The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface. The Nearctic realm covers most of North America, including Greenland, Central Florida, and the highlands of Mexico. The parts of North America t ...

and

Neotropical The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In bioge ...

regions. Three fossil species from

Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...

Baltic amber The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It was produced sometime during the Eocene epoch, but exactly when is controversial. It has been estimated that these forests created more than 1 ...

have been described. These flies have long 12-segmented antennae, legs and abdomen and males have well-developed wings while females have a short one. Little is known, but most species have been collected near streams in woodlands.

Species

*'' Hesperinus brevifrons''

Walker Walker or The Walker may refer to: People *Walker (given name) *Walker (surname) *Walker (Brazilian footballer) (born 1982), Brazilian footballer Places In the United States *Walker, Arizona, in Yavapai County *Walker, Mono County, California * ...

, 1848 *'' Hesperinus conjugens'' Schiner, 1868 *''

Hesperinus cuspidistylus ''Hesperinus'' is a genus of flies and the sole genus in the relict family Hesperinidae belonging to the nematoceran infraorder Bibionomorpha. There are about 8 known species, nearly all from the Palaearctic region with one each from the Nearcti ...

'' Hardy & Takahashi, 1960 *''

Hesperinus electrus ''Hesperinus'' is a genus of flies and the sole genus in the relict family Hesperinidae belonging to the nematoceran infraorder Bibionomorpha. There are about 8 known species, nearly all from the Palaearctic region with one each from the Nearcti ...

'' Skartveit, 2009 *'' Hesperinus graecus'' Papp, 2010 *'' Hesperinus heeri'' (Heyden & Heyden, 1865) *'' Hesperinus hyalopterus'' Skartveit, 2009 *'' Hesperinus imbecillus'' ( Loew, 1858) *'' Hesperinus macroulatus'' Skartveit, 2009 *''

Hesperinus nigratus ''Hesperinus'' is a genus of flies and the sole genus in the relict family Hesperinidae belonging to the nematoceran infraorder Bibionomorpha. There are about 8 known species, nearly all from the Palaearctic region with one each from the Nearcti ...

'' Okada, 1934 *''

Hesperinus ninae ''Hesperinus'' is a genus of flies and the sole genus in the relict family Hesperinidae belonging to the nematoceran infraorder Bibionomorpha. There are about 8 known species, nearly all from the Palaearctic region with one each from the Nearcti ...

'' Papp & Krivosheina, 2010 *''

Hesperinus rohdendorfi ''Hesperinus'' is a genus of flies and the sole genus in the relict family Hesperinidae belonging to the nematoceran infraorder Bibionomorpha. There are about 8 known species, nearly all from the Palaearctic region with one each from the Nearcti ...

'' Krivosheina & Mamaev, 1967

References

Monotypic Diptera genera Palearctic insects Bibionomorpha Bibionomorpha genera Nematocera families {{diptera-stub