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The Status of Coccinella septempunctata L. and its Varieties divaricata Oliv. and confusa Wied.

Published online by Cambridge University Press:  31 May 2012

V. Sudha Rao
V. Sudha Rao
Affiliation:
Indian Station, Commonwealth Institute of Biological Control, Bangalore, India
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Extract

A survey was recently undertaken by the author with Dr. V. P. Rao, Entomologist-in-charge, Indian Station, Commonwealth Institute of Biological Control, Bangalore, India, for natural enemies of Adelges spp. attacking silver fir (Abies spp.) and spruce (Picea spp.) in the North-West and Eastern Himalayas. In the course of this survey it was found that the coccinellids Coccinella septem-punctata L., C. septempunctata L. var. divaricata Oliv. and C. septempunctata L. var. confusa Wied, were three of the most common predators of Adelges spp. in both these areas. With a view to sending laboratory-reared material to Canada for trial against Adelges piceae Ratz., which is a serious pest there, large numbers of these Coccinellids were collected in the fir and spruce forests to provide breeding material.

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 12 , December 1962 , pp. 1341 - 1343
Copyright
Copyright © Entomological Society of Canada 1962

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