About seven species of the Hepialidae were known to occur in Japan (Cf. INOUE, 1954, Check List Lep. Jap., 1: 5-6), but Korscheltellus macilentus (EVERSMANN, 1851), which is a potential subspecies of K. ganna (HUBNER, 1814), has recently been secured at the following locality in Japan: Midagahara, Toyama Pref., 28. VIII. 1960, 2♂(H. YAMANAKA), in my collection.
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