Aphids
very large group of insects: the super- family Aphidoidea, belonging to the order Hemiptera . The aphids discussed here all belong to the family Aphididae [...] crop: Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded, giving rise [...] large quantities of sap in order to get sufficient protein. As a consequence, the excess sugar is secreted in the form of honeydew, making the crop and its