A common aphid, Acyrthosiphon pisum, which feeds on the sap of leguminous plants and is found worldwide as a pest of peas and other legumes; also "green pea aphid".
Origin
Early 20th century.
Definition of pea aphid in US English:
pea aphid
noun
A common aphid, Acyrthosiphon pisum, which feeds on the sap of leguminous plants and is found worldwide as a pest of peas and other legumes; also "green pea aphid".