Taxonomic review of the potter wasp genus Antepipona de Saussure, 1855 (Hymenoptera, Vespidae, Eumeninae) from Vietnam, with descriptions of two new species and keys to the Oriental fauna

Species of the solitary wasp genus Antepipona de Saussure, 1855 (Eumeninae Leach, 1815, Odynerini Lepeletier, 1841) occurring in Vietnam are reviewed. Seven species have been collected from the study area, with two species new to science. These are described and figured, along with their male genitalia, as Antepipona concava Nguyen, Dang & A. D. Nguyen, n. sp. and Antepipona crenula Nguyen, Yamane & Engel, n. sp. Four species, A. bipustulata (de Saussure, 1855), A. ceylonica (de Saussure, 1867), A. rufescens (Smith, 1857), and A. tytides (Cameron, 1904), are recorded from Vietnam for the first time. The male genitalia of A. ceylonica and A. tytides are described for the first time. Keys are provided to the Oriental species of the genus.