We investigated the larval development of the Indian meal moth, Plodia interpunctella, on raw whole almonds, shelled macadamia nuts, shelled walnuts, dried plums, and raisins at various temperatures. Eggs hatched at darkroom temperatures from 15 to 30℃, and adults emerged from all kinds of nuts and dried fruits at darkroom temperatures from 20 to 30℃. There were significant correlations between the developmental period of larvae and rearing temperature. No adults emerged below 15℃, but few larvae survived more than one year at 15℃. These results suggest that nuts and dried fruits should be stored below 10℃ to avoid infestation of P. interpunctella.
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