Thitarodes nipponensis is a species of moth of the family Hepialidae. It was described by Kyoichiro Ueda in 1995, and is known from Japan.[1]
The forewings are 14–19 mm in length and are brownish or yellowish with lighter markings. The hindwings are greyish brown, with a more brownish-yellow coloring on the apical area of the costa and the cilia.