« Back

Eriosoma ulmi

Elm-currant aphid

Description

The elm-currant aphid, scientifically known as Eriosoma ulmi, belongs to the family Aphididae and is commonly found in Asia and Europe. It feeds on plant tissue by sucking it out. The aphid induces the formation of abnormal plant growths called galls on elm trees (Ulmus species), which serve as their primary host. For completing their life-cycle, they require a secondary host, the roots of currant bushes (Ribes species), on which they also feed. Galls are yellowish-green or pinkish in color are formed when one half of a leaf becomes crinkled and rolls inwards, forming a tubular pouch. In the spring and early summer, numerous aphids inhabit the gall and are usually brownish to dull green and covered in wax.

Symptom

Galls are yellowish-green or pinkish in color are formed when one half of a leaf becomes crinkled and rolls inwards, forming a tubular pouch.

Tree Species: Elm

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes