Whitefly
consequences: 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 [...] need a lot of nutrients for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted [...] influence the development of fruit and lead to a reduction in yield. By sucking plant sap and secreting honeydew, whitefly reduces the aesthetic value of crops