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Encarsia formosa
Greenhouse Whitefly Parasitoid Wasp
Encarsia formosa is a minute chalcidoid wasp in the family Aphelinidae, renowned as one of the first biological control agents used commercially for greenhouse pest management beginning in the 1920s. Females are approximately 0.6 mm in length and exhibit a distinctive black body with yellow abdomen and opalescent wings. The species reproduces asexually via thelytoky induced by Wolbachia bacterial infection; males are produced but are incapable of inseminating females. This parasitoid attacks at least 15 whitefly species, with primary hosts including Trialeurodes vaporariorum (greenhouse whitefly) and Bemisia tabaci (silverleaf whitefly).