Aphid, (family Aphididae), any of a group of sap-sucking, soft-bodied insects (order Homoptera) that are about the size of a pinhead, most species of which have a pair of tubelike projections (cornicles) on the abdomen. Aphids can be serious plant pests and may stunt plant growth, produce plant. Download scientific diagram | 2. The pea aphid, Acyrthosiphon pisum . from publication: An Investigation of the Behavior of the Pea Aphid, Acyrthosiphon pisum | Aphids and Peas | ResearchGate, the.

Typical annual life-cycle of aphids. (A) Schematic diagram of a typical holocyclic life cycle of aphids, (B) sexual individuals (male and oviparous female) of Acyrthosiphon pisum, (C) viviparous.. A general overview of aphids on plants as parasites, what they are, their life cycle, types, interaction with ants and control methods.