Piesma quadricornis Lepeletier & Serville, 1828: 653. ST(S): Spain.
Taphrostethus staudingeri Baerensprung, 1858a: 205 (syn. Baerensprung, 1860: 20). LT (B. Lis, 2001b: 424): Spain, Andalusia; ZMHB.
Taphrostethus staudingeri var. doriae Ferrari, 1874: 169 (syn. Horváth, 1906a: 12). ST(S): male, Italy, Liguria, La Spezia; MCSN.
Cantacader quadricornis var. nubilus Horváth, 1906a: 12. STS: male, female, Azerbaijan (Lenkoran), Asian Turkey, Smyrna [= Izmir] and Georgia (Caucasus); HNHM (see B. Lis, 2003a).