Notes on Parasitism of a Spruce Sawfly, Diprion polytomum (Htg.) (Hymenoptera: Diprionidae), in Czechoslovakia and Scandinavia
- 1 October 1958
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 90 (10), 584-589
- https://doi.org/10.4039/ent90584-10
Abstract
The European spruce sawfly, Diprion hercyniae (Htg.), was first found in Canada in 1930. An aerial survey in the following year showed that it was causing severe defoliation in an area of about 2,500 square miles in the Gaspé Peninsula, Quebec. In succeeding years it spread rapidly over wide areas in Eastern Canada (see, e.g., Baird 1937, Balch 1937). The work reported below was part of an attempt to control the sawfly by biotic agents.Keywords
This publication has 4 references indexed in Scilit:
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- Eupelmella vesicularis Retz. (Chalcididae) as a predator of another chalcid, Microplectron fuscipennis ZettParasitology, 1938
- The Insect Parasites of the Spruce Sawfly (Diprion polytomum, Htg.) in EuropeBulletin of Entomological Research, 1937
- NOTES ON THE INTRODUCTION OF DIPRION PARASITES TO CANADAThe Canadian Entomologist, 1936