Taxonomic Studies on the Halictine Bees of Lasioglossum (Evykeus) lucidulum Subgroup in Japan with Comparative Notes on Some Palaearctic Species (Hymenoptera, Apoidea)

Abstract

The halictine bees of the Lasioglossum (Evylaeus) lucidulum subgroup are reviewed with descriptions of 3 new species from Japan: L. zunaga sp. nov., L . longifacies sp. nov. and L. pumilum sp. nov., and redescriptions of L. kuroshio Sakagami et Takahashi and L. massuricum (Bliithgen). Comparative notes on 5 Western species, L. lucidulum (Schenck), L. minutissimum (Kirby), L. tschibuklinum (Bliithgen), L . semilucens (Alfken) and L. intermedium (Schenck) are added to. A key to the studied species is presented.