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Photo#781816
Bur oak leaf mine - Dyseriocrania griseocapitella

Bur oak leaf mine - Dyseriocrania griseocapitella
Pheasant Branch Conservancy, Middleton, Dane County, Wisconsin, USA
June 6, 2013

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Bur oak leaf mine - Dyseriocrania griseocapitella Bur oak leaf mine - Dyseriocrania griseocapitella

Moved
Moved from Oak Shothole Leafminer.

This definitely isn't agromyzid frass, and I can now see there is some distinctly stringy frass in the lower left corner. The granular frass in the middle portion of the mine is unusual, but I don't think there's anything else this can be.

Moved

Brachys?
Do you have an upperside shot for this one?