Abstract
Developmental periods and survival were determined for immature stages of the Mexican bean beetle at constant temperatures of 11, 15, 20, 25, and 30°C. Rearings were conducted on greenhouse-grown snap bean foliage, greenhouse-grown soybean foliage, and field-grown soybean foliage. Comparisons between rearings on greenhouse snap bean and greenhouse soybean foliage indicated that larval developmental periods for individual instars did not differ between host plants, but larval survival was different depending on temperatures. Comparisons between rearings on greenhouse and field soybean foliage indicated no differences in larval developmental periods or survival. The constant temperature developmental rates for eggs and larvae permitted satisfactory simulation of egg and larval development under changing temperature regimes in the laboratory. For each stage, a fitted equation for the developmental rate - temperature relationship on snap bean and on soybean foliage was determined.
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