Aphids
to plants in several ways, and the damage can vary depending on the species of aphid and the type of plant being attacked. The following are common signs [...] leaves, stems, and flowers by piercing the plant tissue and sucking out the sap. This can result in stunted growth, curling or distortion of the leaves, yellowing [...] between host plants also mate in the autumn and lay eggs which overwinter. Where mating occurs and eggs are laid, the life cycle is termed holocyclic (complete)