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LADYBIRD BEETLES AS PREDATORS OF THE POTATO PSYLLID

Published online by Cambridge University Press:  31 May 2012

George E. Knowlton
George E. Knowlton
Affiliation:
Associate Entomologist, Logan, Utah.
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Extract

During the spring of 1933, an adult convergent ladybird beetle, Hippodamia convergens Guerin, was placed in a 3-dram homeopathic vial with a number of nymphs of the potato psyllid, Paratrioza cockerelli (Sulc). The ladybird immediately grabbed a psyllid nymph and began to eat it. Ten fifth-instar psyllid nymphs were eaten by this predaceous beetle during the one and one-half hours that it was caged with the nymphs. It was noted that moving nymphs were taken more quickly than those at rest, but the beetle showed no reluctance at taking the scale-like nymphs which were quietly feeding.

Type
Articles
Information
The Canadian Entomologist , Volume 65 , Issue 11 , November 1933 , pp. 241 - 243
Copyright
Copyright © Entomological Society of Canada 1933

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References

page 241 note 1 Contribution from the Department of Entomology, Utah Agricultural Experiment Station. Publication authorized by Director.