Review of the genus Xyrosaris Meyrick (Lepidoptera, Yponomeutidae, Yponomeutinae) from Korea, with two new species Author Na, Sol-Moon 0000-0002-3782-2206 Yeongnam Regional Office, Animal and Plant Quarantine Agency, Busan, 39660 Korea nasom86@gmail.com Author Bae, Yang-Seop 0000-0001-7356-5633 Division of Life Sciences, Incheon National University, Incheon, 22012 Korea & Bio-Resource and Environmental Center, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012 Korea baeys@inu.ac.kr text Zootaxa 2024 2024-01-05 5397 3 418 426 http://dx.doi.org/10.11646/zootaxa.5397.3.6 journal article 10.11646/zootaxa.5397.3.6 1175-5326 10468932 9D6E5BA0-0755-4F7B-9AFD-427DF2527DDC Xyrosaris insularis Ponomarenko & Beljaev, 2023 ( Figs 2D, 2E , 3B, 3F , 4B , 5B ) Xyrosaris sp. 2 : Oku, 2003: 26 ; Komatsu, 2020: 64 ; Yagi, 2022: 47 . Xyrosaris insularis Ponomarenko & Beljaev, 2023: 137 . TL: Russia (Primorskii Krai). Diagnosis. This species is similar to X. triacantha Na & Bae sp. n. superficially. But it can be distinguished by the following genital characters: the valval harpe is dramatically curved near apex, with seven large thorns in the male genitalia; the ductus bursae is less than 2.5 times as long as corpus bursae in the female genitalia. Distribution . Korea , Japan ( Hokkaido , Honshu, Kyushu), Russia (Southern of the Far East). Host plant. Celastraceae — Euonymus alatus f. ciliatodentatus Hiyama (Present study); E. orbiculatus Thunb. ( Ponomarenko & Beljaev 2023 ). Material examined. [ INUB ] ♀ , Gyeonggido Province , Yangpyeong-gun , Yangseo-myeon , 7. V. 1998 ( Y.S. Bae ), genitalia slide no. QNA-06 . ♂ , 4♀ , Gyeongsangsando Province , Changnyeong-gun , Hwawangsan Mountain , 29.VII.1998 ( DS Gu ) [in Korean], genitalia slide no. QNA-07, -08, -09 ( 2♀ abdomen lost). ♂ , Gyeonggido Province , Inchon-shi , Jangsu-dong , 6.X.1999 ( Lee & Lee ), genitalia slide no. QNA-10 . 2♀ , Gyeonggido Province , Ansan-si , Is. Daebu , Mt. Hwanggeum , 31.VIII.2004 ( Oh , Kim , Song & Nha ), genitalia slide no. INU-4736 , -4737 . FIGURE 3. Male genitalia and enlarged valval harpe in Xyrosaris spp (A–H).: A, E. X. lichneuta Meyrick , genitalia slide no. INU-4739; B, F. X. insularis Ponomarenko & Beljaev , genitalia slide no. QNA-12; C, G. X. vaginata sp. n. , genitalia slide no. INU-4742 (paratype).; D, H. X. triacantha sp. n. , genitalia slide no. INU-4743. Remarks . Prior to Ponomarenko and Beljaev (2023) , this species was reported as Xyrosaris sp. 2 by Oku (2003) from Japan . Subsequently some Japanese authors referred to it. In the present paper, this species is reported from Korea for the first time. However, the mtCOI information was already uploaded at the GenBank (KF523851.1) as X. lichneuta Meyrick. Ponomarenko and Beljaev (2023) predicted distribution in Korea by comparing their own mtCOI data with Genbank and BOLD. Therefore, this species is validated in the Korean fauna.