Adelges abietis (Adelgidae)
Similar to A. cooleyi.
Also similar to A.
Attacks native and ornamental spruces in B.C., Alberta, and Saskatchewan.
Also a serious pest in nurseries and Christmas tree plantations in eastern
Canada. No secondary host is known.
Galls disfigure ornamental and Christmas trees lowering monetary and aesthetic
References and Links:
Photo from:E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, USA, Bugworld.org