Taxonomic status of Xyrosaris melanopsamma Meyrick, 1931 (Lepidoptera: Yponomeutidae) with notes on congeneric species in East Asia Author Ponomarenko, Margarita G. Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690022, Russia text Zootaxa 2024 2024-07-26 5486 3 338 350 http://dx.doi.org/10.11646/zootaxa.5486.3.2 journal article 303323 10.11646/zootaxa.5486.3.2 ae739d35-73f8-4b01-9d6e-942b44210a0f 1175-5326 13210046 A1FFAFB6-20BE-4C82-8A93-F5CFB8B0324B Xyrosaris insularis Ponomarenko et Beljaev, 2023 Xyrosaris insularis Ponomarenko et Beljaev, 2023 , Zootaxa , 5306 (1): 135–143. Type locality: Russkii Island , Primorskii Krai , Russia . Xyrosaris insularis : Na & Bae 2024: 421 , Figs 2D, E; 3B, F, 4B . Xyrosaris sp. 2 : Komatsu 2020: 64 , figs 4–6; Yagi 2022: 47 , figs 5, 6. Material examined. Type material. Russia , Primorskii Krai : ♂ , holotype , 1 km SW of Vladivostok , Russkii Isl. , Rogozin cape, 42°59’13” N 131°44’47” E , reared from Celastrus orbiculatus , 18.07.2022 , gen. slide 181 MP (leg. E. Beljaev ); paratypes : 1♀ , same locality, date, host plant and collector as in holotype ; 32 ♂ , 40 ♀ , same locality and host plant, 22.08– 09.09.2022 , gen. slides 182 (f), 190 ( ♂ ) MP (leg. M. Ponomarenko and E. Beljaev ), voucher Nos 777 ( ♀ ), 779 ( ♀ ), 783 ( ♂ ), 784 ( ♂ ), 788 ( ♂ ) ; 29 ♂ , 17 ♀ , Khasanskii distr. , 59 km SW Slavyanka , Furugelm Isl. , 42°27′55″ N 130°55′10″ E , 20– 22.09.2012 , gen. slides 186 ( ♂ ) YuZ, 187, 189, 191 ( ♂♂ ), 188, 192, 193 ( ♀♀ ) MP (leg. M. Ponomarenko ), all in FSCB . Primorskii Krai : 2♂ , 2♀ , paratypes , 1 km SW of Vladivostok , Russkii Isl. , Rogozin cape, 42°59’13” N 131°44’47” E , 26.08, 29.08.2022 (leg. M. Ponomarenko and E. Beljaev ), all in ZIN . Distribution . Russian Far East (Primorskii Krai), South Korea , Japan ( Hokkaido , Honshu, Kyushu). Host plants. Celastrus orbiculatus Thunb. ,? Euonymus alatus f. ciliatodentatus Hiyama ( Celastraceae ). Remarks. The narrow trophic specialization was noted for larvae of this species. When the larvae were reared in laboratory conditions, they fed on Celastrus orbiculatus Thunb. only, refusing to eat even a closely related species C. flagellaris Rupr. , belonging to the same botanic genus. Unfortunately, in a recently published work ( Na & Bae 2024 ), the specimen reared from Euonymus alatus f. ciliatodentatus Hiyama is not indicated in the examined material. Also, it is unclear whether its genitalia are illustrated. Moreover, the authors gave an erroneous combination of plant species with the generic name “ E [ uonymus ] orbiculatus ”, which causes confusion in the host plants of this species and wrongly associate the main host plant Celastrus orbiculatus , on which 68 specimens were collected and reared, with the genus Euonymus .