Stilpnogaster aemula is a species of 'stiletto flies' belonging to the family Asilidae.
Subspecies include:
This species is present in part of Europe (Austria, Czech Republic, France, Germany, Italy, Poland, Romania, Slovakia, Sweden, former Yugoslavia and Switzerland).
Stilpnogaster aemula can reach a body length of about . Face is covered with pubescence and shows a narrow shiny longitudinal marking. Tergites and sternites are shiny black, with tomentose hind margins of each segment. Discal bristles on tergites are well-developed. Metatarsus of mid leg is of usual length.