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A Unique Association of Two Species of Lepidoptera1

Published online by Cambridge University Press:  31 May 2012

L. M. Cass
L. M. Cass
Affiliation:
Vegetable Insect Section, Entomology Laboratory Ottawa, Canad
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Extract

On August 15, 1955, during studies on the ecology of caterpillars on cabbage near Carp, Ontario, two species of Lepidoptera were observed in unique association. A final-instar larva of the diamondback moth, Plutella maculipennis (Curt.), bore on its third abdominal tergite an egg of the imported cabbageworm, Pieris rapae (L.) (Fig. 1). The larva appeared to he unaffected by the presence of the egg and when brought into the laboratory spun its cocoon within 24 hours. The egg remained attached to the larval skin, becoming enclosed within the cacoon, and hatched during the prepupal period. The resultant larva tried to free itself from the cocoon for several hours and eventually died.

Type
Articles
Information
The Canadian Entomologist , Volume 89 , Issue 10 , October 1957 , pp. 484
Copyright
Copyright © Entomological Society of Canada 1957

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References

Harcourt, D. G. 1954. The biology and ecology of the diamondback moth, Plutella maculipennis Curt., in eastern Ontario. Ph.D. thesis. Cornell University.Google Scholar