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THE MORPHOLOGY OF THE ADULT OF DIPRION POLYTOMUM (HARTIG)

Published online by Cambridge University Press:  31 May 2012

W. A. Reeks
W. A. Reeks
Affiliation:
Entomological Branch Dom. Dept. of Agriculture, Fredericton, N.B.
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Extract

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).

Type
Articles
Information
The Canadian Entomologist , Volume 69 , Issue 12 , December 1937 , pp. 257 - 264
Copyright
Copyright © Entomological Society of Canada 1937

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References

REFERENCES

(1)Balch, R. E. 1937, The Spruce Sawfly Outbreak in 1936, Pulp and Paper Magazine of Canada, Feb. 1937.Google Scholar
(2)Enslin, E. 1917, Die Tenthnedinoidea Mitteleuropas, supplement to Deut. Ent. Zeit 12: 541–563.Google Scholar
(3)Hartig, T. 1834, Der Entomologische Teil in dem forstlichen und forst-naturwissen-schaftlichen Conversations—Lexicon: 991. Nauch, Berlin.Google Scholar
(4)Rohwer, S. A. 1918, New Sawflies of the Sub-family Diprioninae (Hym) Proc. Ent. Soc. Wash. 20:79–90.Google Scholar
(5)Snodgrass, R. E. 1935, Principles of Insect Morphology, McGraw-Hill, New York.Google Scholar