Gergithus is a genus of tropical Asian planthoppers in the family Issidae, erected by Carl Stål in 1870. Like all planthoppers, adults feed on plant sap and are capable of escaping by leaping. The genus like other members in the tribe appears somewhat rounded and beetle-like, in some cases, with a mimetic resemblance to ladybird beetles. Species are mostly distributed in the Indomalayan Realm.

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