Genus Palmerella Cameron, 1908

Palmerella Cameron, 1908: 290 . Type species: Palmerella nigra Cameron, 1908 . Monobasic.

Townestenus Momoi, 1966: 162 . Type species: Townestenus albocristatus Momoi, 1966 . Original designation.

In Japan, following a single species has been recorded. I recognize a new distribution record and record the data below.