Review of the genus Stigmus Panzer (Hymenoptera, Crabronidae) in China, with description of five new species from the Oriental and Palearctic Regions

Five new species of the genus Stigmus: S.capoblongus Bashir & Ma, sp. n., S.denticorneus Bashir & Ma, sp. n., S.fronticoncavus Bashir & Ma, sp. n., S.interruptus Bashir & Ma, sp. n. and S.lobomelanicus Bashir & Ma, sp. n. are described and illustrated from China. Also, a key to the species of Stigmus Panzer occurring in China is provided.