Bunbunius quadrihamis sp. nov. from Sichuan province, China (Coleoptera: Scarabaeidae: Melolonthinae)
Bunbunius quadrihamis sp. nov. from Sichuan province in China is described, figured, and an updated key to species of Bunbunius Nomura, 1970 is presented. Bunbunius quadrihamis sp. nov. is closely related to B. pseudoopacipennis Keith, 2008 and B. prunellus (Arrow, 1946), from which it differs mainly in the shape of external male genitalia. New records for the species Bunbunius sinensis Keith, 2005 (China: Gansu, Shaanxi) are given.