Genus Achlya Billberg (Lepidoptera: Drepanidae: Thyatirinae) new to Korea, with an annotated world checklist

In this study, a genus, Achlya longipennis Inoue, 1972, is reported for the first time from Korea with a newly recorded species. The adult and genitalic structures of the newly recorded species are redescribed with illustrations of adult and male genitalia. In addition, an annotated checklist of the genus is provided.