A review of the genus Eugoa Walker (Lepidoptera, Erebidae, Arctiinae, Lithosiini) in Cambodia, with the description of a new species

Eugoa Walker (Arctiinae, Lithosiini) from Cambodia is reviewed. The genus counts with 20 species in this country, including Eugoa arguta Bayarsaikhan Bae, n. sp., and three newly recorded species, E. vasta van Eecke, 1920, rest. comb., E. formosicola (Matsumura, 1927), n. st. and E. kuznetzovi Dubatolov Bucsek, 2016. Besides our revalidation of Eugoa bipunctata formosicola as a valid species, it was also discovered to have a synonym: E. cesaneki Bucsek, 2008 n. syn. Moreover, females of E. lucea Bucsek, 2012, E. nata Dubatolov Bucsek, 2013, and E. kuznetzovi Dubatolov Bucsek, 2016 are described and illustrated for the first time. A key to the Cambodian species of the genus Eugoa with illustration of adults and genitalia are provided.