Figures 1-12 from: 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

Figures 1-12 - Head of male, front view, and mandibles. 1 Tachysphex smissenae sp. n. 2 Tachysphex bohemicus sp. n. 3 Tachysphex cretensis sp. n. 4 Tachysphex dimidiatus 5 Tachysphex jokischianus 6 Tachysphex nigripennis 7 Tachysphex nobilis sp. n. 8 Tachysphex punctipleuris sp. n. 9 Tachysphex pompiliformis 10 Tachysphex opacus 11 Tachysphex opacus, mandible, frontal view 12 Tachysphex pompiliformis, mandible, frontal view.