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OVIPOSITION BY NABIS ALTERNATUS (HEMIPTERA: NABIDAE) IN ALFALFA

Published online by Cambridge University Press:  31 May 2012

L. A. Richards  and
A.M. Harper
L. A. Richards
Affiliation:
Research Station, Agriculture Canada, Lethbridge, Alberta T1J 4B1
A.M. Harper
Affiliation:
Research Station, Agriculture Canada, Lethbridge, Alberta T1J 4B1
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Abstract

The eggs of Nabis alternatus Parshley, which are laid in the stems of alfalfa plants, can be identified by their opercula, which protrude from the stem. Most eggs were laid in the upper portion of the main stem where the mean widths of the stems were 1.5 to 1.7 mm, and the hardness averaged 7.4 kg. The mean and minimum heights of oviposition increased with increasing total height of stem and the number of eggs laid also increased. Eggs laid in alfalfa stems that were subsequently allowed to dry had low percentage hatch.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 12 , December 1978 , pp. 1359 - 1362
Copyright
Copyright © Entomological Society of Canada 1978

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