Figures 13-21 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 13-21 - Head of female, front view. 13 Tachysphex hungaricus sp. n. 14 Tachysphex smissenae sp. n. 15 Tachysphex bohemicus sp. n., 16 Tachysphex dimidiatus 17 Tachysphex jokischianus 18 Tachysphex nigripennis 19 Tachysphex nobilis sp. n. 20 Tachysphex pompiliformis 21 Tachysphex punctipleuris sp. n.