Globular, hard, folded leaf
The two halves of a leaf form a capsule, which eventually develops a longitudinal slit on the upper side through which full-grown larvae escape. Swellings appear in May and larvae leave in June. This species is univoltine.
Host: P. angustifolia
Distr: Georgia
- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©