Abstract: Acantholyda erythrocephala, a kind of destructire insect, is found recently in Shenyang, China. Its host tree is Pinus spp. especially Pinus tabulaeformis and P.densiflora. The injured branch, tip will be withered or even died. The harmful period of the larvae is about one month. There is one generation during a year in Shenyang area. Winter is passed as prepupae by making earth cells in the soil at the depth of 0～10cm. It can be controlled by many ways:set up closed forest; making conopy density be more than 0.7; digging out the forest soil in autumm, winter or early spring; cutting the larval nests and burning up; spraying 10% pyrethrum at 8000x ditution to the early instar larvae.

Key words: Acantholyda erythrocephala, Host plant, Life cycle and habits, Control method