Dubius is a genus of
flies in the family
Dolichopodidae, with seven species distributed in southern
China and another five in the
Neotropical realm. The genus name is from the
Latin word dubius, referring to the variance of
frons. The genus was first established by Wei Lian-Meng in 2012, including a group of species from the Neotropical realm previously placed in Chrysotus, as well as five newly described species from China.[1] According to some researchers, all of the Neotropical species should be kept in Chrysotus, as their transfer to Dubius was unwarranted.[2][3]