G. D. Butler
United States Department of Agriculture
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Featured researches published by G. D. Butler.
Biocontrol | 1982
G. D. Butler
Development times at constant temperatures were determined for the egg, larval and pupal stages ofCoccinella 7-punctata L., recently introduced to U.S.A. Males and females developed at the same rate. The egg stage lasted from 2.3 to 13.0 days at 30° and 15°C, respectively. Larvae feeding onAcyrthosiphon pisum (Harris), pea aphids, required from 6.2 to 31.1 days at 32.5°, and 17.0°C, respectively. These development rates are similar to those reported in the European literature.
Annals of The Entomological Society of America | 1983
G. D. Butler; T. J. Henneberry; T. E. Clayton
Annals of The Entomological Society of America | 1980
G. D. Butler; Juan D. López
Journal of Economic Entomology | 1986
G. D. Butler; T. J. Henneberry; F. D. Wilson
Canadian Entomologist | 1977
A. P. Gutierrez; G. D. Butler; Y. Wang; D. Westphal
Journal of Economic Entomology | 1984
G. D. Butler; F. D. Wilson
Journal of Economic Entomology | 1968
G. D. Butler
Journal of Economic Entomology | 1985
G. D. Butler; L. T. Wilson; T. J. Henneberry
Annals of The Entomological Society of America | 1984
Charles G. Jackson; G. D. Butler
Environmental Entomology | 1976
G. D. Butler