New species of Hercostomus Loew, 1857 (Diptera: Dolichopodidae) from Tajikistan

Abstract

Hercostomus vodjanovi Negrobov, Maslova et Selivanova, sp. n. from Tajikistan is described. The new species is similar to Hercostomus crassiseta Yang et Saigusa, 2001 but differs by the structure of hypopygium, oblongoval epandrium, which length is 1.8 times greater than its width, the top of the phallus with the odontoid process, and to Hercostomus nanus (Macquart, 1827), from which it differs by the structure of cerci, chaetotaxy of mid tibia and long 3rd antennal segment.

Keywords

• Diptera
• Dolichopodidae
• Hercostomus
• new species
• Tajikistan