In 2019, the mitochondrial genome of S. pallipes was sequenced, as the first representative of the subfamily Sympycninae.

[6] Syntormon pseudospicatus is sometimes treated as a synonym of S. pallipes, but they are argued by Drake (2020) to be distinct species.

[7] A subspecies named Syntormon pallipes longistylus was described by Igor Grichanov from Madagascar in 2001.

[1] In 2020, it was determined that this subspecies was in fact a distinct species, Syntormon longistylus.

This article related to members of the fly family Dolichopodidae is a stub.