Abstract
Eurytetranychus japonicus sp. nov. is described, illustrated from Quercus glauca Thunb. in Tochigi Prefecture, Honshu. This is the first record of the genus Eurytetranychus Oudemans from Japan. A redescription of Aponychus firmianae (Ma et Yuan), comb. nov., new to Japan (Honshu) is also presented.
