Oyamia nigribasis Banks

Oyamia nigribasis Banks, 1920:316 .

Holotype ♂ (USNM), Yalu River, 150-200 miles from mouth [Korea / Manchuria border]

Material examined. Republic of Korea: Ulsan Metro City, Sangbuk-Myeon, Gajisan Province Park , Soeknamsa, 24 May 2006, M. Kippenhan, 2♀ (USNM).

Comments. Zwick (1973b) reported this species from a small series of specimens collected in Hjangsan, Mjohjang-san, Korea, by personnel of the Institute of Zoology, Polish Academy of Sciences in 1965. Ra et al. (1991) gave additional Korean records, redescribed the adults and provided scanning electron micrographs of the eggs of this species (as Oyamia coreana Okamoto), and Isobe & Uchida (2009) recently reviewed the genus, including new data for O. nigribasis and the Japanese species.