The family Arctiidae belonging to superfamily Noctuoidea, it was divided into three subfamilies: Lithosiinae, Arctiinae, and Syntominae (Kitching and Rawlins, 1999; Conner, 2009). The family include 11,155 species of 750 genera worldwide (Heppner, 2005). About 6000 species distribute in the Neotropics but the family is represented in all the main zoogeographical regions (Scoble, 1992). Taxonomic study of the Arctiidae in Cambodia has been done by a few foreign entomologists. As the results of this study, about 90 species of 40 genera belonging to Arctiidae were recorded from Cambodia, most of them are recorded for the first time in Cambodia. 21 species are briefly redescribed in this study such as: Nyctemera coleta (Boisduval, 1832), Brunia antica (Walker, 1854), Darantasia cuneiplena (Walker, 1859), Eilema longpala (Holloway, 2001), Cabarda sequens (Walker, 1862), Lyclene lutara (Moore, 1859), Teulisna steineri (Holloway, 2001), Cyana obliquilineata (Hampson, 1900), and Cyana quadrinotata (Walker, 1897), etc.

The tribe Archipini occurring mainly in the Holarctic, Afrotropical and Oriental Regions; scarcely represented in the Neotropical with more than 500 described species of 150 genera (Razowski, 2003). The tribe Archipini in Vietnam was studied by several authors. Kuznetsov (1992) described two new species, Homona superbana and Neocalyptis sodaliana, besides 28 known species were recorded, and he (1997) also recorded four species, Homona encausta (Meyrick), Neocalypis tricensa (Meyrick), Meridemis furtiva Diakonoff and Lumaria probolias (Meyrick). In a study on Tortricidae fauna from Vietnam (2000), 43 of 208 Tortricidae species belong to the tribe Archipini were annotated. Based on the collection of the Berlin Museum, Razowski (2008a) reported seven known species and described 13 new species belong to four genera, Gnorismoneura Issiki & Stringer, 1932, Terthreutis Meyrick, 1912, Synochoneura Obraztsov, 1955, and Terricula Falkovitsh, 1965, he also reported ten known species and described five new species belong to three genera, Choristoneura Lederer, 1859, Homona Walker, 1863 and Meridemis Diakonoff, 1976 (2008b). In the year of 2009, he described one new genus, Chirapsina Razowski, 15 new species, besides 37 known species were recorded (2009a), he (2009b) also described five new species and four known species from Vietnam. In the present study, we focused on Archipini fauna in the northern part of Vietnam, a total of 19 species belong to 13 genera are recorded. Among them, five species Adoxophyes tetraphracta Meyrick, Meridemis bathymorpha Diakonoff, Pademis corylana Fabricius, Terthreutis bulligera Meyrick, and Ulodemis hyalura Diakonoff are recorded for the first time.