title: A taxonomic review of the Neoserica (sensu lato) abnormis group (Coleoptera, Scarabaeidae, Sericini).
abstract: The present paper revises the species belonging to the Neoserica (sensu lato) abnormis group, so far known only with two nominal species. Twenty new species are herein described from Indochina and southern China: N. abnormoides sp. n. (Vietnam, China), N. allolaotica sp. n., N. namthaensis sp. n., N. simplicissima sp. n. (Laos), N. thailandensis sp. n. (Thailand), N. alloputaoana sp. n., N. kanphantensis sp. n., N. natmatoungensis sp. n., N. putaoana sp. n., N. taunggyiana sp. n. (Myanmar), N. lamellosa sp. n., N. tonkinea sp. n. (Vietnam), N. bairailingshanica sp. n., N. euyunnanica sp. n., N. huangi sp. n., N. jiangxiensis sp. n., N. trifida sp. n., N. yaoi sp. n., N. yingjiangensis sp. n. (China), N. cardamomensis sp. n. (Indochina and southern China). One new combination is established: Neoserica ponderosa Arrow, 1946, comb. n. The lectotypes of Neoserica abnormis Moser, 1908 and the taxonomically uncertain N. inclinata Brenske, 1898, which very likely also belongs to this species group, are designated herein. A key to the species and to species groups is given, the genitalia of all species including their habitus are illustrated. Maps of species distribution are included.
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, P.R. China ; Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 160, 53113 Bonn, Germany.
authors.forename: Dirk
authors.initials: D
authors.lastname: Ahrens
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, P.R. China ; Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 160, 53113 Bonn, Germany.
authors.forename: Wan-Gang
authors.initials: WG
authors.lastname: Liu
authors.affiliation: Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 160, 53113 Bonn, Germany.
authors.forename: Silvia
authors.initials: S
authors.lastname: Fabrizi
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Bai
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, P.R. China.
authors.forename: Xing-Ke
authors.initials: XK
authors.lastname: Yang
keywords: Beetles; China; Indochina; Neoserica; chafers; new species