Bathyplectes stenostigma,1 a Parasite of the Alfalfa Weevil2 in Europe

15 November 1971

journal article
research article
Published by Oxford University Press (OUP) in Annals of the Entomological Society of America

Vol. 64 (6) , 1361-1367
https://doi.org/10.1093/aesa/64.6.1361

Abstract

Bathyplectes stenostigma (Thomson), a univoltine parasite of the alfalfa weevil, Hypera postica (Gyllenhal), discovered in Europe in 1961, is apparently native to northern and central Europe and is probably host-specific to the alfalfa weevil. Field studies near Paris and in southern Sweden showed that alfalfa weevil larvae are attacked in sequence through the season by B. anurus (Thomson), B. curculionis (Thomson), and B. stenostigma with minimal competition between these parasite species. Over 98,000 cocoons of B. stenostigma were mass collected in Europe (1961–70) and shipped to the United States for emergence and release. European surveys, collections, and shipments were made at a cost of about $0.06 per cocoon.

Keywords

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