Genus Chrysotus Meigen

Chrysotus Meigen, 1824: 40 . Type species: Musca nigripes Fabricius, 1794 .

Diagnosis. The genus can be distinguished from other Diaphorinae members by the following characters: Body small to median-sized, metallic green; males and females with frons wider than face, occasionally males holoptic or nearly so; face parallel-sided or narrowing downward; eyes shortly haired; male eyes very narrowly separated or contiguous on face (sometimes widely separated), with enlarged facets toward face; arista long, located at tip; propleuron with 2–3 bristles on lower part, and upper part bare; R4+5 and M parallel apically. Male genitalia: surstylus not branched, apically with short hairs and (or) 1 spine-like bristle; epandrial lobe long and broad; cercus small. Some species of the genus are similar to Diaphorus and Dubius, but can be separated from the others by the fr/fa (frons/face ratio)> 1.0 and arista located at tip (Yang et al. 2011; Wei 2012b).

Remarks. For list of synonymy of the genus, see Yang et al. (2006).