Pionosomus opacellus Horváth, 1895c: 40. LT (Scudder, 1970a: 203): female, Russia (ST), Sarepta [= Krasnoarmeysk nr Volgograd]; MNHN.
Pionosomus varius (non Wolff, 1804): Garbiglietti, 1869: 116 and Ferrari, 1892: 557. Misidentifications (see Mancini, 1952b: 61).
Pionosomus depressus Horváth, 1895c: 41 (syn. Josifov, 1987b: 7). LT (Scudder, 1970a: 200): male, Italy, Vercelli; HNHM.