Gena of male. 24 Tachysphex dimidiatus 25 T. opacus 26 T. pompiliformis 27 T. punctipleuris.

 
 
  Part of: Straka J (2016) Tachysphex austriacus Kohl, 1892 and T. pompiliformis (Panzer, 1804) (Hymenoptera, Crabronidae) are a complex of fourteen species in Europe and Turkey. ZooKeys 577: 63-123. https://doi.org/10.3897/zookeys.577.7301