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 (s. l.) maculosa Moser, 1915 Additional material examined. 1 ♂ [ China ] “ Longsheng , Guangxi , 16.VI.1980 ” ( IZAS ) , 2 ♂♂ , 2 ♀♀ [ China ] “ Menglun , Yunnan , 19.V.1991 , leg. Wang Yinglun , Tian Rungang / LW-286” ( MNAFU ) , 1 ♂ , 1 ♀ [ China ] “ Nanning , Guangxi , 28.XI.1991 , leg. Cai Wanzhi ” ( MNAFU ) , 2 ♂♂ [ China ] “ Sanmen , Piaoli , Guangxi , 3.VI.1963 , leg. Yang Jikun ” ( CAU ) , 1 ♀ [ China ] “ Longsheng , Guangxi , 10.VI. 1980 , 300m, leg. Song Shimei ” ( IZAS ) , 2 ♂♂ , 1 ♀ [ China ] “ Longsheng , Guangxi , 23.Ⅴ. 1963 , 300m, leg. Wang Shuyong ” ( IZAS ) .