Abstract
Encarsia pergandiella Howard females develop as primary parasitoids of immature whiteflies, whereas ♀♀ develop as secondary parasitoids on ♂♂ of their own species or on other primary whitefly parasitoids. In this experiment, maleE. pergandiella development was examined in the laboratory at 24°C, using different stages of immatureE. pergandiella females [enclosed within the cuticle ofTrialeurodes vaporariorum (Westwood)] as hosts. Unmated adult femaleE. pergandiella were caged individually for 24 h on leaves of plants with either 5-day (early to late 3rd instar larval), 7-day (late 3rd instar to prepupal), or 9-day (pupal) hosts. In a control treatment, hosts were allowed to complete development without exposure to unmated adult females. Subsequent emergence of ♂♂ (hosts) and ♀♀ from all treatments was recorded daily.
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