Black Walnut Leaf [Coptodisca? juglandiella??] Mine ID Request - Coptodisca juglandiella Herring Run Watershed, Baltimore City County, Maryland, USA August 9, 2013
Observed on Juglans nigra.
Topside.
Basing my guess on this description: http://www.microleps.org/Guide/Heliozelidae/Coptodisca/index.html.
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