The tribe Eucosmini is the second largest tribe of Olethreutinae with more than 1,000 species in over 125 genera, distributed mostly in the Holarctic region, and over half of the known species occur in the Nearctic region (Horak and Brown, 1991b). Enarmonia Hübner, Ancylis Hübner, and its allied genera are tentatively retained in Eucosmini, although they have been treated as the subtribe Enarmoniina (Razowski, 1989) belong to Eucosmini maybe distinguished from other tribes by a combination of the following characters proposed by Kuznetsov and Stekolnikov (1984): 1) one-branched protuberance of the valve; 2) gnathos and uncus very weakened or reduced. In Vietnam, in the period 1977-1978 and 1997-1998, National Institute of Plant Protection (NIPP) recorded only seven Tortricidae species. But none of them are Eucosmini. Recently, Kuznetzov (2001) recorded four species in the South Vietnam: Eucosmogastra aeolantha (Meyrick, 1914), Noduliferola pleurogramma (Clarke, 1976), N. atriplaga (Clarke, 1976), N. phaeostropha (Clarke, 1976). Razowski recorded 14 species of 10 genera of Eucosmini (2009). In this study, we are briefly reviewed of tribe Eucosmini in North Vietnam. As the result of this study, totally 19 Eucosmini species of 13 genera are recognized. Of them, 17 species are reported for the first time from Vietnam such as: Coenobiodes acceptana Kuznetzov, 1973; Epiblema foenella (Linnaeus, 1785); Eucosma calligrapha Meyrick, 1912, etc. The materials identification based on the collection of University of Incheon, which has collected from 2004-2009 in the North Vietnam by Vietnamese and Korean entomologist.

• Le Xuan Vi(Division of Life science, College of Natural Science, University of Incheon)
• Pham Thi Vuong(Plant Protection Research Institute, Vietnam Academy of Agricultural Sciences)
• Do-Young Chae(Division of Life science, College of Natural Science, University of Incheon)
• Yang-Seop Bae(Division of Life science, College of Natural Science, University of Incheon)