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Some Biological Characteristics of the Ichneumonidae (Hymenoptera) in Relation to Biological Control1

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Ichneumonids are parasites on insect larvae or pupae, on spiders, and in spider egg cocoons. Host selection is determined partly by ecological factors and partly by physiological, the ecological factors being more important than usually realized. Size and sex ratio, but not color or morphology, are commonly influenced by the host selected. The number of broods per season is probably sometimes dependent on the number of broods of the host. Moisture, particularly in the form of dew, is an important requirement of ichneumonids, and in many cases its scarcity is a limiting factor. Biological control could be made more effective if these facts were better recognized.

Document Type: Research Article

Publication date: October 1, 1958

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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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