Aphid

Found worldwide in temperate zones, typically colonies live on the undersides of leaves, stems, and flower buds of a wide variety of plants.

Sap-suckers; they feed on phloem sap from plants using piercing-sucking mouthparts, which can cause leaves to yellow or curl.

They often congregate in dense clusters on new plant growth. They excrete a sticky substance called 'honeydew' which can attract ants and promote mold growth. They have rapid reproduction cycles, often reproducing asexually.

Major agricultural and garden pests because they weaken plants and can transmit plant viruses. They are beneficial as a primary food source for predators like ladybugs and lacewings.