Cydnus rugosus Jakovlev, 1874a: 235. LT (Kerzhner, 1972a: 359): female, Russia (ST), Astrakhan; ZMAS.
Cydnus ovatulus Jakovlev, 1877b: 272 [name only], 282 [description, as oratulus] (junior secondary homonym of Aethus ovatulus Dallas, 1851; syn. Kerzhner, 1964a: 365). LT (Kerzhner, 1972a: 360): female, Russia (ST), Astrakhan; ZMAS.
Aethus flavicornis longispinis Wagner, 1952n: 41 (syn. Kerzhner, 1964a: 365). HT (see Aukema & Kerzhner, 2005: 70): male, Caucasus; ZMUH.