The family Gracillariidae belonging to Gracillarioidea comprises more than 2,000 described species of 75 genera in the world (Davis & Robinson, 1999). The members of the family are mostly small-sized moths, which can be distinguished by a short (2-10mm in length) and lanceolated narrow wing with prominent cilia. The larvae of the family have been known as leaf-miner and hypermetamorphic development in larval stages.
In Korea, it has been recorded 39 species of 11 genera by several researchers (Nakayama & Okamoto, 1940; Ko, 1969; Park, 1975; Park et al. 1977; Kumata & Park, 1978; Park, 1983; Kumata et al., 1983; Park & Han, 1986). Recently, Sohn (2007) reported 6 species without descriptions and detail information for the species. However, it is necessary to investigate and review the Korean Gracillarid moths, due to their lack knowledge from Korea to date, comparing with Japanese fauna, which contains 225 known species from Japan (http://www. jpmoth.org/).
In this study, three species, Cloptilia heringi Kuroko, Phyllonryeter cavella (Zeller), and P. tritorrhecta (Meyrick), of the family Gracillariidae aree reported for the first time from Korea.

• Bong-Woo Lee(Division of Forest Biodiversity, Korea National Arboretum)
• Bong-Kyu Byun(Division of Forest Biodiversity, Korea National Arboretum)
• Shin-Young Park(Division of Forest Biodiversity, Korea National Arboretum)
• Doo-Hee Kwon(Division of Forest Biodiversity, Korea National Arboretum)
• So-Ra Kim(Division of Forest Biodiversity, Korea National Arboretum)
• Kyu-Tek Park(McGuire Center for Lepidoptera and Biodiversity, University of Florida, USA)