Polynema similis Foerster, 1847: 218. Lectotype ♀ (NHMW), designated by Soyka, 1956b: 108, examined. TL: Germany, Aachen.
Stephanodes similis: Debauche, 1949: 205 (generic transfer implied); Huber & Fidalgo, 1997: 37 (key, description, Argentina); Luft Albarracin et al., 2009: 12 (list, distribution in Argentina); Luft Albarracin et al., 2009: 12 (list, distribution in Argentina); Luft Albarracin et al., 2014: 138 (list).
Distribution. Argentina.