Aphids
wingless forms of adults of the same species developing, depending on the conditions. Wingless adult aphids are known as apterous, and winged adults as alate. [...] instantly on plant sap. They grow rapidly and moult four times before becoming adult, with the conspicuous white cuticles, shed during each of these moults, betraying [...] species, aphids can inflict various types of damage to a crop: Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones