Tobacco whitefly
whitefly need a 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 [...] from the pupa via a T-shaped fissure. The adult whiteflies are often scattered over the entire plant where they deposit their eggs. This is why on one leaf [...] 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