THE MORPHOLOGY OF THE ADULT OF DIPRION POLYTOMUM (HARTIG)
- 1 December 1937
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 69 (12) , 257-264
- https://doi.org/10.4039/ent69257-12
Abstract
In 1930, the spruce sawfly, Diprion polytomum (Hartig), was found severely defoliating spruce trees in the interior of the Gaspe Penninsula in Quebec. At that time it was estimated that some 2,500 square miles were affected. Since then the infestation has increased in intensity and extent, and in 1936 the sawfly was known to be present throughout most of the spruce forests of north eastern America from the eastern boundary of Ontario to Nova Scotia (I).Keywords
This publication has 1 reference indexed in Scilit:
- Principles of Insect MorphologyTransactions of the American Microscopical Society, 1936