(1) Pilaria discicollis discicollis (Meigen, 1818)
(2) Pilaria discicollis simulans Savchenko, 1983
(3) Pilaria discicollis ripicola (Gerard, 1968)

The status of the taxa simulans and ripicola has been contested repeatedly, but apparently without further examination of the type material and without additional biological or genetic data. I therefore retain them as a valid subspecies until more information about these taxa becomes available. Only the nominate subspecies occurs in Germany.