Thirteen new species of genera Dichomeris Hübner, 1818 and Helcystogramma Zeller, 1877 (Lepidoptera, Gelechiidae, Dichomeridinae) with twenty-one newly recorded species from Vietnam Author Park, Kyu-Tek BioResource and Environmental Center, Division of Life Sciences, Incheon National University, Incheon, 22012 Korea Author Bae, Yang-Seop 0000-0001-7356-5633 BioResource and Environmental Center, Division of Life Sciences, Incheon National University, Incheon, 22012 Korea & https: // orcid. org / 0000 - 0001 - 7356 - 5633 Author Zhao, Shengnan College of Life Sciences, Nankai University, Tianjin 300071, P. R. China Author Li, Houhun College of Life Sciences, Nankai University, Tianjin 300071, P. R. China text Zootaxa 2020 2020-08-03 4821 3 435 461 journal article 8728 10.11646/zootaxa.4821.3.2 a9792973-949f-4327-82ad-8a38612624b4 1175-5326 4400933 E831BB59-C95B-4C30-B827-131723233045 12. Dichomeris parallelosa Park & Ponomarenko, 1998 ( Figs 19 , 51 ) Dichomeris parallelosa Park & Ponomarenko, 1998: 163 . TL: Thailand . Material examined. VIETNAM : Vinh Phuc Province : 2♀ , Tam Dao Nat. Park , 1000 m , 04–05 v 2005 , leg. KT Park & SR Kim , gen. slide no. CIS-6312; 1♀ , same locality, 750 m , 15 viii 2005 , leg. KT Park, MY Kim & MY Chae , gen. slide no. nklep060; 1♀ , same locality, 450 m , 30 vii 2006 , leg. Park , Chae & Cuong ; 1♀ , same locality, 950 m , 31 vii 2006 , leg. Park, Chae & Cuong, gen. slide no. nklep022; 1♂ , same locality, 950 m , 24 v 2007 , leg. KT Park , gen. slide no. nklep036; 1♀ , same locality, 950 m , 26 iv 2006 , leg. Park , Kim & King , gen. slide no. nklep035. Ninh Binh Province : 1♀ , Cuc Phuong Nat. Park , 200 m , 23 iv 2006 , leg. Park , Kim & King , gen. slide no. nklep040. Female genitalia ( Fig. 51 ). Apophyses anteriores inflated in basal 1/3, about 1/5 the length of apophyses posteriores. Eighth sternite deeply concave on anterior margin, slightly concave on posterior margin. Antrum membranous. Ductus bursae sclerotized along lateral margins, with two different sized, sclerotized band arising from basal 1/3 of ductus bursae, extending to posterior part of corpus bursae. Corpus bursae rounded, as long as ductus bursae; signum absent. Distribution. Vietnam (new record: Ninh Binh , Vinh Phuc ), Thailand . Remarks. The female is described and illustrated for the first time.