Allohercostomus is a genus of flies in the family Dolichopodidae. It includes three species from China and Nepal. Members of the genus are metallic green in color and are small in size, with a body length of 2.5–3.2 mm and a wing length of 2.8–3.4 mm. The generic name is a combination of the prefix allo- (from the Ancient Greek , , meaning "other") with the generic name Hercostomus. In Brooks (2005)'s phylogenetic analysis of the subfamily Dolichopodinae, Allohercostomus was hypothesized to be the most basal member of the subfamily based on a triangular depression present on the scut
GENUS
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Allohercostomus is a genus of flies in the family Dolichopodidae. It includes three species from China and Nepal. Members of the genus are metallic green in color and are small in size, with a body length of 2.5–3.2 mm and a wing length of 2.8–3.4 mm. The generic name is a combination of the prefix allo- (from the Ancient Greek , , meaning "other") with the generic name Hercostomus. In Brooks (2005)'s phylogenetic analysis of the subfamily Dolichopodinae, Allohercostomus was hypothesized to be the most basal member of the subfamily based on a triangular depression present on the scutum in front of the scutellum, a plesiomorphy lost in other members of the subfamily. It can also be distinguished from other members of Dolichopodinae by features such as the bottoms of its eyes being contiguous.
== Species == Allohercostomus chinensis Yang, Saigusa & Masunaga, 2001 – China (Yunnan) Allohercostomus nepalensis Yang, Saigusa & Masunaga, 2001 – Nepal Allohercostomus rotundatus (Yang & Saigusa, 1999) – China (Sichuan, Shaanxi)
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