Bull-pine
Guides
Zadiprion townsendi
bull pine sawfly
Zadiprion townsendi, commonly known as the bull pine sawfly, is a species of conifer sawfly in the family Diprionidae (Hymenoptera). The genus Zadiprion is a small group of sawflies whose larvae feed on pine needles. This species is associated with bull pine (Pinus ponderosa), serving as a defoliator of this economically important timber species. Like other diprionid sawflies, Z. townsendi undergoes complete metamorphosis with larval stages that feed gregariously on host foliage.