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.

This study was conducted to clarify the faunistic data for the genus Olethreutes from North Korea, which is one of the biggest genus in the family Tortricidae. Eventhough there have been several investigations by previous researchers, no comprehensive study on the genus from North Korea has been conducted to date. In the present study, a total of 19 species of the genus Olethreutes were recognized from North Korea. All available information for the species, including the host plants, synonymies, and distributional ranges, is also provided.

In North Korea, the Tortricidae has been poorly studied until Byun et al. (1998) reviewed 350 species from Korea, including 63 species of Tortricinae and 40 species of Olethreutinae. Then Razowski (1999) presented a checklist of 358 species of Tortricidae from Korea, including 176 species of the North Korean Tortricidae with mostly based on the avaialble materials in Poland and previous literatures. Later, a serial studies on the family Tortricdae of North Korea with the material deposited in the Hungarian Natural History Museum provided several additional data for the North Korean tortricid fauna (Byun 2009; Byun 2011a; Byun 2011b; Byun 2011c; Byun et al. 2007) During the course of the study on the Tortricidae of North Korea deposited in Hungarian Natural History Museum, the author found three species of Olethreutes for the first time from North Korea. Of them, Olethreutes aviana Falkovitsh is also newly reported to the Korean peninsula. The aim of the present study is to report the three species of Olethreutes as new to North Korean fauna. In the present study, three species of the genus Olethreutes: O. aviana Falkovitsh, O. obovata (Walsingham), and O. orthocosma (Meyrick), based on the material deposited in the Hungarian Natural History Museum, are reported for the first time from North Korea. Among them, O. aviana Falkovitsh is recorded as new to the Korean peninsula. Photographs of the adults and genitalia of the species are presented.

한국산 Olethreutestes속을 아속 단위로 구분정리하였으며, 작은 왕무늬애기잎말이 [Olethreutes subtilana(Falkovitsh0], 노랑띠애기잎말이 [O. aurofasciana(Haworth)]과 작은광택애기잎말이 [O.moderata Falkovitsh]등 3종의 우리나라 미기록종을 포함한 16종에 대하여 동종이명(Synonym), 채집지, 성충의 발생시기 및 국내에서 밝혀진 기주식물 등을 조사정리하였다. 처음으로 조사된 기주식물로는 들깨가 노랑무늬애기잎말이의 기주로 밝혀졌다. 동정이 완료된 거의 모든 종의 자.웅생식기를 도해하여 종의 분류동정에 이용 가능토록 하였다. 총 밝혀진 16종 중 13종은 극동아세아지여에만 분포하고 있는 종이었으며 뽕흰애기잎말이와 우수리애기잎말이 등 2종을 제외한 전종이 우리날와 일본의 공통종이었다.