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 Pachyserica rubrobasalis Brenske, 1897 Additional material examined. 1 ♂ , 1 ♀ [ China ] “ Tienmushan , 13,14. VII.1937 / LW-278” ( IZAS ) , 1 ♂ “ China : Zheijiang Gutianshan NNR, 2010, CSP 14, 639m , 118,14° E , 29.25° N local collector / Asia Sericini 1333 spec.” ( NME ) , 2 ♂♂ “ Guangdong , Nanling Nature Reserve , 2016-VI-29–31 ” ( SCAU ) , 1 ♂ “ Guangdong , Nanling Nature Reserve , 2017-V-31 ” ( SCAU ) , 1 ♂ 1 ♀ “ CHINA : Guangdong , Shaoguan , Ruyuan Co. , Nanling N. R. N 24°55′37″, E 113°1′19″, 1027 m , 31.V.2022 (at light) lgt. Ye XH, Zhan BX & Ma YS” ( CZMZ ) , 1 ♂ 1 ♀ “ CHINA : Hunan , Chenzhou , Guidong , Bamianshan Village , 2021.V.11–15 , 25°58′44″N / 113°42′46″E ~ 1000 m , Ming-Zhi Zhao & Xin-Yang Jia, light trap ” ( CZMZ ) , 2 ♀♀ “ CHINA : Guangxi , Laibin , Jinxiu , Yinshan Forest Park 24.169022°N , 110.243975°E 1184 m 2023.V.18 Xiao-Han Ye leg.” ( CZMZ ) , 1 ♀ “ CHINA : FUJIAN , Wuyishan City , Mt. Wuyishan , Tongmu Vill. 27.74° N , 117.67° E , 750 m , 2021.V.20 , Yu-Long Zhang leg.” ( CZMZ ) .