A taxonomic account of the genus Labus de Saussure, 1867 (Hymenoptera,Vespidae, Eumeninae) with descriptions of three new species

Abstract

Three new species, namely Labus edentatus sp. n. from China, L. sparsipunctus sp. n. from Thailand and L. robustus sp. n. from Indonesia are described and illustrated. Both L. amoenus van der Vecht, 1935 and L. pusillus van der Vecht, 1963 are newly recorded from China and Vietnam, and L. angularis van der Vecht, 1935 is also firstly recorded from China. An updated key to the world species of the genus Labus is provided.