The genus Olethreutes, established by Hübner in 1822, is based on the type species Phalaena arcuella Clerk, 1759. Olethreutes is one of the largest group within the family Tortricidae, with more than 130 species worldwide. As of now, about 31 species of the genus Olethreutes have been reported in the Korean peninsula. The proposes of this study is to describe one new species, with three similar species form Korea.

The subtribe Olethreutae Diakonoff (1973) which is one of the large subtribe in the subfamily Olethreutinae in the Tortricidae. Diakonoff classified the Olethreutae into a total of 27 genera and three genus groups: Olethreutes, Hedya, and Apotomis. According to the check list of insects from Korea (KSAE & ESK, 2021), 62 species from 11 genera of Olethreutae have been recorded in Korea. This study, provided with redescriptions, distribution, host plants, along with illustrations of adults, male and female genitalia are given.

According to Diakonoff (1973) subtribe Olethreutae is classified into a total of 27 genera and three genera groups: Olethreutes, Hedya, Apotomis. Up to data, 62 species belonging to 11 genera of Olethreutae have been reported in Korea(KSAE & ESK, 2021). In this study, we provide a checklist of subtribe Olethreutae with illustrations of adult, and genitalia of example species of each genus group.