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THE RYE JOINTWORM (HYMENOPTERA: EURYTOMIDAE), A NEW INSECT PEST IN WESTERN CANADA

Published online by Cambridge University Press:  31 May 2012

N. D. Holmes  and
P. E. Blakeley
N. D. Holmes
Affiliation:
Research Station, Canada Department of Agriculture, Lethbridge, Alberta
P. E. Blakeley
Affiliation:
Research Station, Canada Department of Agriculture, Lethbridge, Alberta
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Abstract

The rye jointworm, Harmolita secale (Fitch), caused economic damage to fall rye in Alberta in 1968, 1969, and 1970, a first such record for Canada. Infested stems reached an average of 21 galls. Individuals in the laboratory required added moisture for pupation and to facilitate emergence of adults, which occurred during the first week of June in 1970. In 1970, the reproductive potential of about 70 was more than counterbalanced by the failure of almost 90% of the galls to produce adults.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 2 , February 1971 , pp. 277 - 280
Copyright
Copyright © Entomological Society of Canada 1971

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References

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