European Spruce Combhorn

Gilpinia hercyniae

Gilpinia hercyniae, the European spruce sawfly, was first found in North America near Hull, Quebec, in 1922. By 1930, severe damage was occurring in spruce stands in the Lower St. Lawrence–Gaspé region of Quebec. Population levels exploded, and further damage subsequently occurred in New Brunswick and the northeastern United States. Loss of wood from spruce mortality was estimated at 10 million cubic metres, but by the mid-1980s pest numbers on all species of spruce in Canada from Manitoba to the Atlantic Ocean and in adjacent parts of the United States had become relatively low under the influence of spontaneous virus disease and introduced parasites. In Newfoundland, control was helped by the introduction of the masked shrew, a cocoon-hunting insectivore.

Scientific name

Gilpinia hercyniae

Family

Diprionidae