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Distribution, life history, host specificity and suitability of an undescribed Chrysolina species (Coleoptera: Chrysomelidae) for the biological control of Chrysanthemoides monilifera (Compositae)

Published online by Cambridge University Press:  10 July 2009

R. J. Adair  and
J. K. Scott
R. J. Adair*
Affiliation:
Keith Turnbull Research Institute, Department of Conservation and Environment, Frankston, Australia
J. K. Scott
Affiliation:
CSIRO Biological Control Unit, Zoology Department, University of Cape Town, Rondebosch, South Africa
*
Keith Turnbull Research Institute, Department of Conservation and Environment, P.O. Box 48, Frankston, 3199Australia.
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Abstract

In host specificity tests using 81 plant species from 27 families, an undescribed Chrysolina sp. completed its development only on Chrysanthemoides monilifera, a serious weed of native vegetation in Australia. Minor exploratory feeding, mostly by adults, occurred on 35 plant species. The Chrysolina sp. is restricted to the eastern Cape Province of South Africa where it occurs on Chrysanthemoides m. pisifera, a subspecies not yet recorded in Australia. Chrysanthemoides m. monilifera and C. m. rotundata, both naturalized in Australia, were accepted as hosts by Chrysolina sp., but adult emergence was lower on the latter subspecies. A climate comparison between a site location for Chrysolina sp. and stations within the Australian distribution of Chrysanthemoides monilifera has identified potential release sites that may be suitable for the insect. Chrysolina sp. was approved for release in Australia in 1989 and releases were initiated in 1990.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 81 , Issue 3 , September 1991 , pp. 235 - 242
Copyright
Copyright © Cambridge University Press 1991

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