Various diagnostic characters. A–D ventral view of metasomal sterna VII and VIII A sternum VIII modified into two lobes B sternum VIII with convex lateral margin C sternum VIII with concave lateral margin D sternum VIII with notch at apical margin E head of Sphex imporcatus, ♀, clypeus with conspicuous ridges (arrow).

  Part of: Dörfel TH, Ohl M (2015) A revision of the Australian digger wasps in the genus Sphex (Hymenoptera, Sphecidae). ZooKeys 521: 1-104.