Bulletin of Entomological Research (1996) 86, 703-714

I. Tosevski, A. Gassmann and D. Schroeder (1996)
Description of European Chamaesphecia spp. (Lepidoptera: Sesiidae) feeding on Euphorbia (Euphorbiaceae), and their potential for biological control of leafy spurge (Euphorbia esula) in North America
Bulletin of Entomological Research 86 (6), 703-714
Abstract: The description of the ten Chamaesphecia species associated with Euphorbia in eastern and south-eastern Europe is based on external adult morphology, male and female genitalia, and the structure of the egg chorion. These species can be divided into two groups according to the shape of the setae of the dorso-basal part of the valvae in the male genitalia. Most Chamaesphecia species are associated with one species of host-plant and all are closely tied to one habitat type. The host-plant and the structure of the egg chorion are fundamental characteristics for the determination of a few species, and very helpful for the others. All species bore into the main root of their host-plant and overwinter as larvae. With the exception of two species which have an annual or biennial life cycle, all species are univoltine. The larvae of three of the eight Chamaesphecia spp. investigated feed and develop in the roots of North American leafy spurge, Euphorbia esula sensu lato. Of these, the best candidate for the biological control of leafy spurge is C. crassicornis, because the larvae have a similar survival rate on the target weed and the European host-plant, E. virgata.
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Link to article at publishers website
Database assignments for author(s): Ivo Tosevski

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
classical biocontrol/new introduction

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Euphorbia virgata (weed)
Chamaesphecia (genus - weed bioagents)
Chamaesphecia crassicornis (weed bioagent)	Euphorbia virgata (weed)