Whitefly
plant sap. This contains a high proportion of sugar, and the excess is excreted as honeydew, with larger larvae expelling large quantities. This can have [...] 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, leaves [...] secreting honeydew, whitefly reduces the aesthetic value of crops. This is particularly important in ornamentals . The honeydew deposited on fruit makes it sticky