A new species of the chalcid-wasp genus Ericydnus walker (Hymenoptera, Chalcidoidea, Encyrtidae) from West Siberia

A new species, Ericydnus novosibiricus sp. n., is described. The main characters differentiating the new species from the similar E. longicornis Dalman are as follows: female??fore wing noticeably shortened, with almost normally developed veins and rounded apex, marginal vein longer than postmarginal vein, 6th flagellar segment slightly longer than wide, club truncate; male??fore wing noticeably shortened, with almost normally developed veins and pointed apex, flagellar segments subsequently becoming wider toward antennal apex.