Maple midge

This midge can be found on maples in the Pacific Northwest. It is thought that it is a Dasineura species.
Silver maple, 'Autumn Blaze' maple, and vine maple have been reported with damage.

Web Resources:

Elmhirst, J. 2004. Final Report on Rose, Salix and Acer Midge Trials in British Columbia

Midge cocoons near veins (pupa on left). Photo: Rosetta

Midge cocoons near veins (pupa on left).
Photo: Rosetta

Curled, bunched leaves from midge damage. Photo: Rosetta

Curled, bunched leaves from midge damage.
Photo: Rosetta

Curled leaves from maple midge. Photo: Rosetta

Curled leaves from maple midge.
Photo: Rosetta

Early midge damage shown by curling, folding of leaves. Photo: Rosetta

Early midge damage shown by curling, folding of leaves.
Photo: Rosetta

Leaves are folded and beginning to blacken (necrosis). Photo: Rosetta

Leaves are folded and beginning to blacken (necrosis).
Photo: Rosetta

Leaf is folded over and nearly black. Photo: Rosetta

Leaf is folded over and nearly black.
Photo: Rosetta

Close up of distorted leaf. Photo: Rosetta

Close up of distorted leaf.
Photo: Rosetta

maple midge damage

Maple midge damage

Maple midge larvae. Photo: Todd Murray

Maple midge larvae.
Photo: Todd Murray

Pupa and pupal cocoon of midge

Pupa and pupal cocoon of midge
Photo: Rosetta

Midge damage on vine maple. Photo: Janice Elmhirst

Midge damage on vine maple.
Photo: Janice Elmhirst