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We investigated the effects of a range of constant temperatures (13.3–32.5°C) on the development of all stages of Helicoverpa armigera (Kumamoto population) reared on tomato. The duration of the different life history stages decreased as temperature increased from 13.3°C to 32.5°C. A developmental threshold of 10.5°C, 11.3°C and 13.8°C was estimated for the eggs, larvae and pupal stages, respectively. A thermal constant of 51 degree-days above a threshold of 10.5°C was required for the development of the eggs. The larval stage required 215.1 degree-days and the pupal stage 151.8 degree-days above 11.3°C and 13.8°C developmental thresholds, respectively. Results from these studies may provide information important for predicting the field population phenology of H. armigera in Kumamoto Prefecture.

Influence of temperature on the rate of development of Helicoverpa armigera (Huebner) (Lepidoptera: Noctuidae).