Abstract
Euseius hibisci (Chant) (Phytoseiidae) preyed on Bemisia tabaci (Gennadius) (Aleyrodidae) on cotton in the laboratory and developed to the adult stage feeding on a mixture of eggs and first and second instars of B. tabaci with 75% survival. Adult longevity and fecundity were greater when fed eggs than when fed first or second instars of B. tabaci . An average of 4.5 B. tabaci eggs were consumed per adult female per day with a range of 0 to 18.4 eggs, but older whitefly eggs were less acceptable. Unfed mites in the controls did not oviposit. Longevity, fecundity, and the oviposition period of E. hibisci feeding on B. tabaci were lower than those of pollen-fed mites.
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