I'm not fully confident in the ID on this one. I couldn't see for sure that there are two equal pads under the
tarsal claws instead of three, but it seems that way. The antennae are 4-segmented, although I'm not sure if the last segment counts as a "segment" rather than a style@ or
arista sticking off the third segment. It has three
ocelli. The key characteristics generally point to Empididae except "
Vein R4+5 usually branched." That
vein certainly isn't branched in this specimen, but the key does say "usually."