The sweetpotato whitefly, Bemisia tabaci, is an important pest of toma
toes and beans, among other crops, which transmits viral diseases. Sin
ce the second quarter of 1989 a significant population increase of thi
s pest has been noted in several cultivated plants. From 1989 to 1992,
a survey was done throughout the country, chiefly in vegetable and be
an-producing areas. They occur in 119 species (42 families), a great i
ncrease over the previous record of four species. Worlwide, this repor
t represents 50 species and six families which are new records.