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 17. Dichomeris splendiptera Li & Park, 2017 ( Figs 29 , 55 ) Dichomeris splendiptera Li & Park, 2017 , In : Zhao et al. : 217. TL: China ( Yunnan ). Material examined: VIETNAM : Ninh Binh Province : 2♂ , Cuc Phuong Nat. Park , 200 m , 23 iv 2006 , leg. Park, Kim & Kang, gen. slide nos. CIS-6301, nklep042. Vinh Phuc Province : 1♂ , Tam Dao Nat. Park , 950 m . 26 iv 2006 , leg. Park, Kim & Kang, gen. slide no. nklep027; 1♀ , same locality, 1000 m , 04 v 2005 , leg. KT Park & SR Kim, gen. slide no. CIS-6677. Bac Kan Province : 1♂ , Ba Be Nat. Park , 240 m , 21–26 vi 2008 , leg. JB Heppner, gen. slide no. CIS-6362. Female genitalia ( Fig. 55 ). Apophyses anteriores about 1/3 length of apophyses posteriors, dilated distally. Antrum membranous. Ductus bursae not clearly defined from corpus bursa; ductus seminalis broad, arising from near conjunction with corpus bursae. Corpus bursae elongated, corpus-ductus bursae complex about 3 times length of apophyses posteriors; accessory bursae arising from anteriorly; signum absent. Distribution. Vietnam (new record: Bac Kan , Ninh Binh , Vinh Phuc ), Cambodia (Mondul Kili), China (Hainan, Yunnan ). Remarks. The female is described and illustrated for the first time.