Abstract
Here is recorded the first discovery of the moth of the genus Elwesia HAMPSON from the region other than the Sikhim district. The specimens collected in Japan (1♂1♀, Mt. Zozu, Shikoku, Nov. 14, 1964, H. TOSHIMA leg.) fairly match the description of the Himalayan, and were determind safely as Elwesia diplostagma HAMPSON, a female type of which has been known. The genitalia as figured are characteristic in having spatulate uncus, very narrow valva bearing well-developed lunar-shaped cucullus with marginal corona, and truncate bottom of saccus.
