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 ) daliensis Ahrens, 2005 Additional material examined. 1 ♂ [ China ] “Yangjiaping, Lushui, Yunnan , 25.VII.2005 , leg. Mao Benyong , Xu Jishan ” ( HBUM ), 1 ♂ [ China ] “Yaojiaping, Lushui, Yunnan , 4.VI.1981 , 2500m , light trap , leg. Zhang Xuezhong ” ( IZAS ) , 2 ♂♂ [ China ] “Yaojiaping, Lushui, Yunnan , 2.VI.1981 , 2500m , leg. Zhang Xuezhong ” ( IZAS ) , 1 ♂ “LW-1350 China : Yunnan , Pianma , 2011-V-11 , N: 26.018, E: 98.625, 1970m .” ( ZFMK ) , 1 ♂ “ CHINA : Yunnan , Kunming , Luquan Co. , Zhuanlong Town , Hejia Vill. ca. 3000 m 2022.V.13–20 ” ( CZMZ ) , 5 ♂♂ “N VIETNAM — Lao Cai province , Hoang Lien Natl Park surr. Sa Pa pass, at light (~ 1900m ) 27.V.2011 / L. Bartolozzi , S. Bambi , F. Fabiano , E. Orbach leg. (Num. Maggazzino 2909)” ( MZUF / VNMN ) . Remarks. The species is for the first time recorded from Vietnam .