Cydnus elongatus Herrich-Schaeffer, 1840a: 96. ST(S): Hungary; lost.
Cydnus oblongus Rambur, 1839: 115 (nomen oblitum; syn. Lis, 1999a: 203). HT: female, Spain, Andalusia, Cadiz; BMNH.
Cydnus caucasicus Kolenati, 1846b: 70 (syn. Kerzhner, 2003b: 95). LT (Kerzhner, 2003b: 95): female, Georgia, Kazbek Mt., Görgeti; NHMW.
Cydnus caucasicus var. rufulus Kolenati, 1846b: 70. ST(S): Georgia, Kazbek Mt.; NHMW (lost?).