Canadian Forest Service Publications
Foliage and catkin insects of trembling aspen, Populus tremuloides Michx./ and their parasites in northwestern Ontario. 1963. Smereka, E.P.; Rose, A.H. Interim Research Report, Forest Insect Laboratory, Sault Ste. Marie, Ontario.
Issued by: Great Lakes Forestry Centre
Catalog ID: 35237
Availability: PDF (download)
Over a period of five seasons starting in 1957, some 115 species of aspen insects were collected and reared at the Cedar Lake . Yield Station. Observations were made on seasonal occurrence, type of feeding, prevalence, and parasites of most of the species reared. Parasite determinations were obtained for 119 species; which emerged from 34 species of aspen insects. It appears that several species of aspen insects act as reservoirs of spruce budworm parasites during periods when the budworm is found only at very low levels. New distribution records are given for about 20 species of aspen insects.