Control of trunk longicorns in cocoa

Abstract

It is the larvae (or grubs) of longicorn beetles which cause damage to cocoa trees. Although many species of longicorns have been recorded as attacking cocoa in Papua New Guinea, only two species (types), Glenea aluensis and Glenea lefebueri cause economic concern. Glenea aluensis is found in all the cocoa growing areas of the Islands Region, but is replaced on the mainland by Glenea lefebueri.