This study reports the first records of four coleophorids, namely Coleophora kamchatica (Anikin, 1999), C. lativittella Erschoff, 1877, C. levantis Baldizzone & Oku, 1988, and C. citrarga Meyrick, 1934, in Korea. Additionally, the presence of two species, C. montaniella Oku & Kusunoki, 2018, and C. artemisicolella Bruand, 1855, in Korea has been overlooked in the previous checklist of the family Coleophoridae in Korea, despite there being evidence of their existence. Consequently, with these additions, the total number of known species in Korea has been confirmed to be 42, expanding from the previously identified 36 species. Diagnostic characteristics and photographs of adults and genitalia for the four newly recorded species are provided, along with evidence supporting the presence of the two overlooked species in Korea.

Two little known species of Microlepidoptera; Deltophora korbe (Caradja) belonging to Gelechiidae, which known from USSR and Aeloanthes semiostrina Meyrick belonging to Xyloryctidae, which known from China, were redescribed and illustrated the genitalic characters of both sexes. And some biology of the latter was first introduced.

This publication is a check list of Microlepidoptera in Korea which all the available synonyms for each species are arranged. In this book, a total of 628 species belonging to 38 families of microlepidoptera, which are usually characterized by the smallness, are listed. Among them, 234 species are reported for the first time from Korea, and 14 faimilies are new in this country. The previously unknown families are : Nepticulidae, opostegidae, Incurvariidae, Bucculatrigidae, Acrolepiidae, Epermeniidae, Argyresthiidae, roeslerstammiidae, Choreutidae, Ethmiidae, Stathmopodidae, Elachistidae, Blastobasidae and Lecithoceridae. And some host plants which previously known and surveyed newly are also listed.

현재 우리나라에서 기록되고 있는 나방류는 학명은 그 상당수가 오랜된 옛 학명들로 틀리게 사용되고 있거나 잘못 분류 동정되어 기록되고 있는 경우가 많으므로 이의 개정 사용이 시급한 일이라 사료된다. 필자는 우선 현생 병해충 잡초명감 (한국식물보호학회, 1972) 및 한국 동물명집 곤충편(한국돌물학회 1968)에 수록된 해충들 중 잘못 기록된 미소 나방류 46종에 대해 국제명명규약 (International Code of Zoological Nomenclature)에 의해 채택되고 있는 새로운 학명으로 개정 발표한다.