BIOLOGY AND USE OF THE WHITEFLY PARASITOID ENCARSIA-FORMOSA

Encarsia formosa is a parasitoid used worldwide for the biological con trol of whiteflies on vegetables and ornamental plants grown in greenh ouses. Because of outstanding success in controlling Trialeurodes vapo rariorum on tomatoes, the biology and behavior of this wasp have been intensively studied to identify attributes that contribute to successf ul biological control and how best to manipulate augmentative releases into greenhouses to suppress whitefly population growth. In this arti cle, we review the biology of adult and immature E. formosa, populatio n dynamics of whitefly-parasitoid interactions, and commercial use in greenhouses. Deficits in knowledge of aspects of E. formosa's biology and use are noted.