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THE CONSUMPTION OF EUPHORBIA CYPARISSIAS (EUPHORBIACEAE) BY LARVAE OF CELERIO EUPHORBIAE (LEPIDOPTERA: SPHINGIDAE)

Published online by Cambridge University Press:  31 May 2012

T. R. New
T. R. New
Affiliation:
Research Institute, Canada Department of Agriculture, Belleville, Ontario
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Abstract

Laboratory feeding experiments on Celerio euphorbiae (L.) showed that each larva consumed about 2.7 g dry weight of Euphorbia cyparissias L. Laboratory-reared and field-collected larvae produced pupae of similar weights and the close similarity between the fresh and dry weights of control-fed larvae and larvae allowed to feed freely indicates that laboratory results are readily extrapolated to field conditions. On one infested site, at Braeside, Ont., the amount of spurge foliage was measured and the density of larvae needed to graze it fully was estimated at 14/m2 completing development. Preliminary data on an energy budget of the larva are discussed in relation to possible damage to the plant.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 1 , January 1971 , pp. 59 - 66
Copyright
Copyright © Entomological Society of Canada 1971

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