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Oak Leaf Gall Midge


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Oak Leaf Gall Midge. Oak leaf gall midge (polystepha pilulae) profile, photos, videos, county distribution. They will dry to a brown, paper thin wall.

Oak Leaf Gall Midge from Woodcock Township, PA, USA on August 20, 2023
Oak Leaf Gall Midge from Woodcock Township, PA, USA on August 20, 2023 from www.inaturalist.org

Vein pocket gall and leaf pocket gall are caused by midges and can be found on specific oak species. Polystepha pilulae, the oak leaf gall midge, is a species of gall midge in the family cecidomyiidae. The larvae of this species of midge form circular galls that can be flat or convex.

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Oak Leaf Gall Midge from Woodcock Township, PA, USA on August 20, 2023

The larvae of this species of midge form circular galls that can be flat or convex. These form on the upper surface of oak leaves of the red oak group. They will dry to a brown, paper thin wall. The galls may be unsightly, but affected trees will not suffer and die from an infestation of oak gall midge.

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