| Hercostomus | |
|---|---|
| Hercostomus nigripennis North Wales | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Dolichopodidae |
| Subfamily: | Dolichopodinae |
| Genus: | Hercostomus Loew, 1857 |
| Type species | |
| Sybistroma longiventris Loew, 1857 | |
| Synonyms | |
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Hercostomus is a genus of flies in the family Dolichopodidae. It is a large genus, containing more than 483 species worldwide. Multiple studies have shown that Hercostomus is a polyphyletic assemblage of species.
The genus currently includes the following species groups, at least 25 of which are known from China:
The Palearctic species of Hercostomus are traditionally separated into five numbered groups, based on the coloration of the femora, postocular setae and antennae:
In 1999, Igor Grichanov divided the Afrotropical species of Hercostomus into three numbered groups. Two of these have since been separated into their own genera: