Pine weevil considered as one of the most damaging pests of eastern white pine. Both the adult and larval stages of pine weevil can cause serious damage to their host trees but most of the damage is caused by larvae. After emerging from soil in the March through April, the adults of pine weevil will move towards main growing shoots of pine trees by either crawling on tree trunk or directly flying towards growing shoot. These adults then start feeding on the buds near growing shoot. Mated females then lay eggs in the punctured tissue. These eggs hatch into small larvae tunnel downwards and start chewing the inner bark of the growing shoot. In case of severe infestation, larvae can completely chew inner bark around the stem or branch that leads in drying of the growing shoot or new growth.
Pine weevils overwinter as adults in the leaf litter. After emerging from soil in the March through April, the adults of pine weevil will move towards main growing shoots of pine trees by either crawling on the trunk or directly flying. Mated females chew pits in the bark and then lay eggs in the pits. Eggs hatch within 2 weeks into small larvae that tunnel downwards and start chewing the inner bark of the growing shoots until they mature. Mature larvae then make chambers for pupation by cutting tissue in wood. Adult weevils emerge from pupae and exit the chamber by chewing exit holes. These adults remain in the tree canopy until the onset of fall and then they will move to the base of tree for overwintering.