Neolycaena rhymnus (Eversmann, 1832):
This specimen from S.Russia is given for comparison:
S.Russia, Volgograd Region, Alexeevka distr.,
Ust-Buzulukskaja, 10-12-VI-2011, leg. G.Kuznetzov
The forewing length is 13 mm.
det. S.Vashchenko