2. Opazon incrassatum (Thomson, 1859)

Figs 2, 8, 10, 15, 18.

Belyta (Opazon) incrassata Thomson, 1859 .

MATERIAL EXAMINED. Russia. ♂ (ZIN): Komi Republic, Seyda River, estuary, 13.VIII.1972, D. Kasparyan leg. ; ♀ (ZIN): Perm’ Prov., Kamenka Village, 18. VI.1962, A. Ponomorenko leg.

VARIATIONS. No distinct variation of the morphological characters was found in the studied specimens.

DISTRIBUTION. England, Sweden, Finland, Czech Republic, Hungary, * Russia (European Part).