Pouch Galls on elm

Pouch Galls on elm

Observation - Pouch Galls on elm - UK and Ireland. Description: Growing on small elm tree at Coe fen (larger dead elms were present). The galls are induced by an aphid that lives inside them.

Growing on small elm tree at Coe fen (larger dead elms were present). The galls are induced by an aphid that lives inside them.