Ash Psyllid

Psyllopsis fraxini


Over all length 3 to 4mm. A well marked 'Jumping Plant Louse' with distinct dark markings around the tips of the wings. There are two similar species, one, Psyllopsis distinguenda, indistinguishable except by microscopic investigation of its genitalia, and the other, Phyllopsis discrepans, which has much less well defined markings on the tips of the wings.


Always found on or near Ash, the food plant. The nymphs cause galls along the edges of the leaves.

Status and distribution

Common and widespread throughout Britain, wherever Ash is growing. Common in Nottinghamshire and recorded once at Netherfield Lagoons.

Best time to see

June to November.