Dasineura fraxini


Dasineura fraxini is a small gall midge that causes a gall to form on the underside of the main vein of Ash leaves. The area becomes swollen to form one or more pouches with a slit-like opening on the upperside, 5 to 30 mm long.

Photo ID?

Found on Ash. The gall is seen more often than the insect itself.

When to see it

Gall is found from late May to October.

Life History

One small orange larva may be found in each pouch.  Pouches may coalesce.

UK Status

Fairly common and widespread in England at least.

VC55 Status

Fairly common in Leicestershire and Rutland.

Leicestershire & Rutland Map

UK Map