Biology and Distribution of Tetrastichus incertus 1 a Parasite of the Alfalfa Weevil1.2


Source: Journal of Economic Entomology, Volume 60, Number 6, December 1967 , pp. 1574-1579(6)

Publisher: Entomological Society of America

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Tetrastichus incertus (Ratzeburg), a parasite of the alfalfa weevil, Hypera postica (Gyllenhal), was introduced from France and established in the eastern United States in 1960. It has been released in 12 Eastern States and recovered from 11. The life history and immature stages arc described. Laboratory experiments indicate that both photoperiod and parent parasites have effects on incidence of larval diapause. Parasitism of alfalfa weevil larvae collected in southeastern Pennsylvania alfalfa fields averaged 71 and 73%, respectively, during the summer months of 1964 and 1965.

Document Type: Research Article

Publication date: December 1, 1967

More about this publication?
  • 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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