SWEETPOTATO WHITEFLY BEMISIA TABACI (GENNADIUS) (HOMOPTERA: ALEYRODIDAE), A POTENTIAL INSECT PEST IN CANADA

Abstract
The sweetpotato whitefly, Bemisia tabaci (Gennadius), was accidentally imported into Canada on poinsettia, Euphorbia pulcherrima Willd., cuttings from the United States in 1987 and in 1988. The biology and population dynamics of B. tabaci were reviewed by Butler et al. (1986). It is a worldwide pest of more than 500 plant species in 74 families. Prior to 1986, there was only one report of this insect as a greenhouse pest, on vegetables in Turkey (Lopez-Avila and Cock 1986). Bemisia tabaci was first reported on poinsettia in Florida greenhouses in November 1986 (Price et al. 1987). In 1987, this insect was reported as a pest on field tomatoes in Florida (Schuster and Price 1987).

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