Taxonomic updates on Pachyserica Brenske, 1898 and Serica MacLeay, 1819 reveal 38 new species and new challenges of Sericini systematics regarding DNA barcodes and genus-level diagnostic key characters (Coleoptera: Scarabaeidae: Sericinae) Author Ahrens, Dirk 0000-0003-3524-7153 Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 127, 53113 Bonn, Germany ahrens. dirk _ col @ gmx. de; https: // orcid. org / 0000 - 0003 - 3524 - 7153 ahrens.dirk_col@gmx.de Author Zhao, Ming-Zhi 0000-0002-3158-6177 College of Plant Protection, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, P. R. China zhaomzhai @ 126. com; https: // orcid. org / 0000 - 0002 - 3158 - 6177 zhaomzhai@126.com Author Pham, Phu Van 0000-0001-9369-6649 Institute of Ecology and Biological resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam phupham. iebr @ gmail. com; https: // orcid. org / 0000 - 0001 - 9369 - 6649 phupham.iebr@gmail.com Author Liu, Wan-Gang 0000-0003-3524-7153 Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 127, 53113 Bonn, Germany ahrens. dirk _ col @ gmx. de; https: // orcid. org / 0000 - 0003 - 3524 - 7153 & SKLLQG, Institute of Earth and Environment, Chinese Academy of Sciences, Yanxiang Road 97, Yanta District, Xi’an 710061 P. R. China liuwangang @ ieecas. cn; https: // orcid. org / 0000 - 0003 - 4788 - 7967 & Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 127, 53113 Bonn, Germany ahrens. dirk _ col @ gmx. de; https: // orcid. org / 0000 - 0003 - 3524 - 7153 ahrens.dirk_col@gmx.de text Zootaxa 2024 2024-08-01 5491 1 1 89 http://dx.doi.org/10.11646/zootaxa.5491.1.1 journal article 10.11646/zootaxa.5491.1.1 1175-5334 13211849 0612E62C-A53D-42BE-8578-68EC77D34627 Serica ( Serica ) nigromaculosa Fairmaire, 1891 Additional material examined. 1 ♂ [China] “ Huoditang , Ningshan , Shaanxi , 30.VII.1979 , 1620m , leg. Han Yinheng ” ( IZAS ), 1 ♂ [ China ] “ Qihe Forestry Farm , Lushi County , Henan , 20.VII.2001 , 1200m , light trap , leg. Dong Kangzhen ” ( IZAS ), 1 ♂ [China] “ Xianjiang Temple , Mts. Emeishan , Sichuan , 19.Ⅴ.1979 , 1750m , leg. Gao Ping ” ( IZAS ), 1 ♂ [ China ] “ Hailougou Luding County Sichuan Prov. alt. 2000 m 27-VII-2006 Hu , Tang , Zhu leg.” ( SNUC ), 1 ♂ “ CHINA : Zhejiang prov. West Tianmu Shan (Mts.) reserve from “Blind Alley” to “Immortal Peak”; mountainous low forest, 1200–1500 m , 27.–28.vi.2017 ; 30°20.5–21.0′N, 119°25.4–7′ E, J. Hájek & J. Růžička leg.” ( NMPC ), 3 ♀♀ “ CHINA : Zhejiang prov. West Tianmu Shan (Mts.) reserve Immortal Peak ; mountainous low forest, esp. on flowering Castanea sequinii, 5.–6.vii.2017 ; 1500 m 30°20′58.5″N , 119°25′26.5″E J. Hájek & J. Růžička leg.” ( NMPC ) .