Cooperative Establishment of a Virginia (USA) Strain of Telenomus alsophilae on Oxydia trychiata in Colombia

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An egg parasite, Telenomus alsophilae Viereck, from the fall cankerworm, Alsophila pometaria (Harris), in Virginia was established on Oxydia trychiata (Guenée) in the Department of Antioquia, Colombia. A. pometaria is a general defoliator of broadleaved forests in eastern North America, while O. trychiata defoliates the introduced conifers Pinus patula Schiede & Deppe and Cupressus lusitanica Miller in Colombia; O. trychiata also has been reared on several species of broadleaved trees.

Within a year, the introduced parasite eliminated O. trychiata in the plantation where it was released. This is the 1st successful application of a biological control agent against a forest insect in Colombia. The behavior of T. alsophilae on eggs of O. trychiata is described, and its life cycle under several environmental conditions and the relationships between host age and successful parasitism are reported.

We recommend a program of intensive taxonomic and biological research on the genus Telenomus, particularly in the Western Hemisphere. It has the potential for widespread use in biological control.

Document Type: Research Article

Publication date: December 1, 1977

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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