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NOTES ON A PARASITE OF PYRAMEIS CARDUI

Published online by Cambridge University Press:  31 May 2012

Caroline E. Heustis
Affiliation:
Carleton, St. Johns, N. B.

Extract

I send you a few specimens of an insect which I have found parasitic on the larvæ of P. cardui. For several successive summers I have reared a number of these caterpillars, with which our thistles in most seasons abound. I observed variations in size and color of the larvæ found feeding on the same plant, which led me to suppose that they might not belong to the same species.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1881

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References

* This insect has been kindly determined by E. T. Cresson, of philadelphia, as Ichneumon rufiventris.—Ed. C. E.