Gergithus iguchii is a species of planthoppers in the family Issidae.
Like all planthoppers, adults feed on plant sap.
The genus Gergithus like other members in the tribe appears somewhat rounded and beetle-like, in some cases, with a mimetic resemblance to ladybird beetles.
About 60 species are known in the genus and they are distributed in the oriental and Palaerctic region.
Gergithus iguchii occurs in China, Japan and Vietnam.

Yunomine, Wakayama Prefecture, Japan, 30 September 2018