Rabdophaga repenticornua

Rabdophaga repenticornua is a gall midge which forms galls on the buds of creeping willow (Salix repens).

Description
The female fly lays an egg in the bud of Salix repens. The solitary, orange larva feeds within the bud which grows into a 13 mm long, horn-like, reddish tube which tapers to the tip. Development of the larva probably takes two years.

Distribution
The gall has been found in Scotland.