Xyrosaris Meyrick, 1907 is a small genus of the family Yponomeutidae, established by Meyrick (1907) for its type species Xyrosaris dyropa Meyrick, 1907. A total of nine species were recognized in the world. Most of species of the genus have been described by Meyrick at the early 20th century. Up to date, X. lichneuta Meyrick, 1918 has been reported from Korea. In the present study, we review the genus Xyrosaris from Korea, with two new species: X. sp.1 and X. sp.2. Key to species, illustrations of adult, male and female genitalia, diagnosis and short description are provided.

The genus Yponomeuta Latreille belongs to the family Yponomeutidae, with over 75 described species worldwide. This genus is distributed mainly in the Palaearctic Region, comprising 42 species. In Korea, a total of 16 species have been reported from Korea. This genus is reported by Park (1983), with seven species in Illustrated Flora & Fauna of Korea Vol. 27. Bae & Byun (2003) reported four newly recorded species of this genus: Yponomeuta kanaiella, Y. montanatus, Y. sociatus, and Y. yanagawanus. Byun (2009) listed a Korean Micro-Lepidoptera, recording 12 Yponomeuta species, with a newly recorded species Y. solitariellus. Sohn et al. (2010) and Lee & Park (2016) added two species: Y. anatolicus and Y. cinefacta. In the present study, we reported three newly recorded species of Yponomeuta, including adults and genital photographs, host plants, distribution and short descriptions.

The subfamily Yponomeutinae Stephens belongs to the family Yponomeutidae, with over 270 described species in theworld. Among them, about 120 species are distributed in Palearctic Region. In Korea, a total of twenty five species havebeen reported from Korea. First recording of this subfamily species is reported Park (1983), with 6 genera 11 speciesin Illustrated Flora & Fauna of Korea, Vol, 27. Bae & Byun (2003) reported four known species of this group: Yponomeutakanaiella, Y. montanatus, Y. sociatus, and Y. yanagawanus.In the present study, we provided a checklist of the subfamily Yponomeutinae with a newly recorded genus, includingadult and genital photographs in each genus.

The genus Argyresthia Hübner, 1826, belongs to the family Argyresthiidae, with over 150 described species worldwide. Among them, over 70 species are distributed in Palearctic Region. In Korea, a total of four species have been reported from Korea. In 1968, the apple fruit moth, Argyresthia conjugella Zeller is reported by The Zoological Society of Korea. Sohn (2007) reported three known species of this genus: Argyresthia ivella Haworth, A. laevigatella, Herrich-Schäffer and A. magna Moriuti. In the present study, five species of the genus Argyresthia are reported from Korea for the first time, including adult, male and female genitalia photographs and short description.