New and little-known species of the leaf chafers of the subtribe Anomalina (Coleoptera: Scarabaeidae: Rutelinae) from China, Nepal, Vietnam and Cambodia

Four new species of the genera Anomala Samouelle, 1819 и Mimela Kirby, 1825 (Scarabaeidae: Rutelinae) are described: Anomala lanthasmena sp. n. (Vietnam: Binh Thuan Province), A. priapituba sp. n. (Vietnam: Lam Dong Province), Mimela furcillata sp. n. (Nepal), M. zinchenkoi sp. n. (Cambodia). A previous record of A. aspera Ohaus, 1914 from South Vietnam is based on a misidentification of A. lanthasmena sp. n., but the first species is confirmed for Vietnam by a new record from Dong Nai Province. Variability of A. anthracina Arrow, 1912 from China is discussed. Considerable similarity between A. obliquisulcata Lin, 2002 (China: Fujian Province), A. pilicauda Lin, 2002 (China: Hainan Province) and A. malivirens Prokofiev, 2021 (Vietnam: Lam Dong Province) is noted.Differential diagnoses of new taxa: Anomala lanthasmena sp. n.: similar to A. aspera, but differs in the more elongated, weakly asymmetrical parameres, rounded at apices in dorsal view. Anomala priapituba sp. n.: shows unique shape of the aedeagus with parameres forming a tube and ventral plate bearing a pair of long spaced processes distally. Mimela furcillata sp. n.: differs from all known species in combination of the deep punctured rows and convex interspaces of elytra, vertical bidentate prosternal process, absence of mesosternal process, ventral plate of the aedeagus horizontal, ending in two straight separated processes. Mimela zinchenkoi sp. n.: resembles M. signaticollis Ohaus, 1902 and its allies but differs in the absence of a complex pattern on the pronotum and in the unique shape of the aedeagus.