English
Reference
Hans-Joachim Jacobs, Christian Schmid-Egger (2014): Crossocerus italicus de Beaumont, 1959 in the Southern Alps with a key to the species of the Crossocerus elongatulus species group (Hymenoptera, Crabronidae) – Ampulex - Zeitschrift für aculeate Hymenopteren – 6: 27 - 30.
