[2] Neomochtherus geniculatus can reach a body length of about 9–20 millimetres (0.35–0.79 in).

[3][4][5] These robber flies have a small facial gibbosity with a few bristles forming the mystax.

The widest point of the distinctly broadened hypopygium is in the middle.

[3] Larvae feed on beetle larvae of the families Cetoniidae, Lucanidae and Melolonthidae, while adults prey on other flies.

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