Tobacco whitefly
es: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight [...] whitefly ( Bemisia tabaci ) is feared because of its high level of resistance to many insecticides and its propensity for the transmission of viruses. [...] lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted as honeydew