Taxonomic notes on the genus Sceliphron Klug (Hymenoptera: Sphecidae) from northern Vietnam, with description of a new species

A taxonomic study on the genus Sceliphron Klug in northern Vietnam is presented. A total of 3 species are recorded: S. deforme deforme (F. Smith, 1856); S. madraspatanum kohli Sickmann, 1894; and S. clypeatum sp. nov., which is described for the first time here. A key to the species based on morphological characters is given, and new distributional records are also provided.