The family of white fly is

The family of the white fly is Aleyrodidae.
Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. They comprise the family Aleyrodidae, the only family in the superfamily Aleyrodoidea.
Aleyrodidae is small insects, most species with a wingspan of less than 3 mm and a body length of 1 mm to 2 mm. Adult Aleyrodidae has well-developed antennae, which in most species in this family are seven-segmented.
The entire structure is characteristic of the Aleyrodidae and within the family it is taxonomically diagnostic because it varies in shape according to the species.