Onthophagus, Latreille, 1802

S. A., Shabalin, 2018, Description of the larva of Onthophagus japonicus Harold, 1875 (Coleoptera: Scarabaeidae) from the Russian Far East with a key to the known larvae of the genus, Caucasian Entomological Bulletin 14 (1), pp. 25-28 : 27

Key to known larvae of the genus Onthophagus from the Russian Far East

1. Anal sternite with 2 sections of setae, median part of anal sternite without palidium ................................................ 2

– Anal sternite with 2 sections of setae, median part of anal sternite with palidium ...................................................... 4

2. Epicranium with 6–10 dorsoepicranial setae. Maxillary stridulatory area with 4–5 conical setae (dorsal view), basal part of stipes with 3 setae ventrally ......................... .......... O. (Phanaeomorphus) fodiens Waterhouse, 1875

– Epicranium with 3–4 dorsoepicranial setae. Maxillary stridulatory area with 7–11 conical setae (dorsal view), basal part of stipes with 1–2 setae ventrally ................. 3

3. Maxillary stridulatory area with 8–11 conical setae, and with 6–8 anterior setae (dorsal view). Galea with 14–18 lateral setae ventrally ............................................. ............ O. (Palaeonthophagus) gibbulus (Pallas, 1781)

– Maxillary stridulatory area with 7–11 conical setae, and with 4 anterior setae (dorsal view). Galea with 11 lateral setae ventrally .................................................... ............................. O. (Strandius) japonicus Harold, 1875

4. Stipes with 3 distal setae dorsally. Galea with 3 apical setae dorsally ........................................................................ ....................... O. (Onthophagus) bivertex Heyden, 1887

– Stipes with 4 distal setae dorsally. Galea with 4–7 apical setae dorsally ......................................................................5

5. Acanthoparia with 2 setae laterally. Maxillary stridulatory area with 7 conical setae (dorsal view), basal part of stipes with 2–5 setae ventrally. Cardo with 3 exterior setae, and with 4 interior setae. Galea with 4–6 apical setae dorsally ......................................................................... ................ O. (Gibbonthophagus) solivagus Harold, 1886

– Acanthoparia with 1 seta laterally. Maxillary stridulatory area with 10–11 conical setae (dorsal view), basal part of stipes with 1 seta ventrally. Cardo with 2 exterior setae, and with 2 interior setae. Galea with 7 apical setae dorsally ......................................................................... .... O. (Palaeonthophagus) nuchicornis (Linnaeus, 1758)