Abstract
This study was conducted to determine the host stage preference of the parasitoid, Aenasius arizonensis Girault (Hymenoptera: Encyrtidae), on Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae). No-choice and choice experiments were carried out. There was approximately 30% parasitism of the third nymphal stage and more than 70% parasitism of female adults. This parasitoid does not parasite the first and second nymphal stage of P. solenopsis because these stages are smaller and more mobile than the third nymphal stage and adult females.
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