Additions to the Neoserica calva group from continental South East Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) Author Ahrens, Dirk Zoologisches Forschungsmuseum A. Koenig, Adenauerallee 160, 53113 Bonn, Germany. 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 text Zootaxa 2021 2021-09-08 5032 3 357 378 journal article 10.11646/zootaxa.5032.3.3 1175-5326 5494695 C4661845-E123-42E7-8689-101E761EB173 Neoserica mengi Liu, Fabrizi, Bai, Yang & Ahrens, 2014 Additional material examined. 6 ♂♂ “ Coll. I.R. Sc. N.B. Vietnam : Tam Dao N.P. 25-28-VIII-2010 / Light Trap Leg. J. Constant & P. Limbourg I.G.31.668” ( ISNB ) , 1 ♂ “ Coll. I.R. Sc. N.B. Vietnam : Pia Oac Mt. N.R. 04-06- VIII-2010 / I.G.31.668 Light Trap Leg. J. Constant & P. Limbourg ” ( ISNB ) , 1 ♂ “Vietnam-N ( Tam Dao ), 55 km NW Hanoi , Tam Dao vill. env. 1998 850-900 m 27.7.-11.8. lg. A. Napolov ” ( CNA ) , 1 ♂ , 1 ♀ “Vietnam-N ( Tam Dao ), 55 km NW Hanoi , Tam Dao vill. env. 15.-23.91997 850-900 m lg. A. Napolov ” ( CNA , ZFMK ) . Remark. The species was so far recorded only from China (Liu et al. 2014); now it is for the first time recorded from Vietnam .