The whiteflies, comprising only the family Aleyrodidae, are small homopterans. More than 1550 species have been described. Whiteflies typically feed on the underside of plant leaves. Agricultural threat While feeding damage can cause economic losses, it's the ability of whiteflies to transmit or spread viruses that has had the widest impact on global food production. In the tropics and subtropics, whiteflies (Hemiptera: Aleyrodidae) have become one of the most serious crop protection problems.… (More on Whitefly)