Key to Oryttus species from Palaearctic region (males and females)

1. Tergites without yellow or white bands, ground color black or red...............................................2.

- Tergites with one or two yellow or white bands (figs 1, 5, 9, 11, 13, 15)...........................................3.

2. Abdomen all black or dark brown. Propodeal dorsum irregulary striated. Female: pronotum black, antenna dark. Male: antennal segment III 3.0x as long as apical width. Kazakhstan, Turkmenistan ........................ Oryttus cribratus Morawitz

- Abdomen red, apically black. Propodeal dorsum evenly longitudinally striated. Female: pronotum with yellow band, antenna red. Male: antennal segment III 3.7x as long as apical width. Tajikistan, Turkmenistan, Uzbekistan .... Oryttus dives Nemkov

3. Mesosoma predominantly red (figs 1, 5, 9).................................................................4.

- Mesosoma black, at most with some yellow or white bands or spots (figs 11, 13, 15)................................5.

4. Head black, with white markings on face (fig. 10). Flagellum black (fig. 9). Tegite I black or red, without apical yellow or white band (fig. 9). Propodeal dorsum longitudinally striated (fig. 9). Legs black with some red parts. Southern and central Europe, Turkey .......................................................................... Oryttus concinnus (Rossi)

- Head red, with yellow spots on face (male (fig. 2) or inner eye margin with some orange (female, figs 5, 7). Flagellum orange (figs 5, 7). Tergite I with yellow apical band (figs 1, 5). Propodeal dorsum with irregular sculpture (fig. 6). Legs all red. Tunisia, United Arab Emirates ..................................... Oryttus konradschmidti Schmid-Egger & Hauser sp. nov.

5. Pronotum with yellow band; pronotal lobe yellow (fig. 11). Legs all red. Wing yellowish. Kasachstan, Mongolia, Russia: Altai ............................................................................... Oryttus kaszabi Tsuneki

- Pronotum, pronotal lobe and legs black (figs 13, 15). Wing blackish infuscate. Armenia, Greece, Turkey ............................................................................................. Oryttus infernalis (Handlirsch)