Supraantennal tubercles, frontal view. 106 Tachysphex bohemicus sp. n. 107 T. dimidiatus 108 T. nobilis sp. n.

 
 
  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