Braun, A. F. 1925c. Microlepidoptera of Northern Utah. - Transactions of the American Entomological Society 51(3):183-226.
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Whitish, tentiform mine, with parenchyma finally almost entirely consumed, and the loosened epidermis drawn into one heavy and several fine wrinkles. Usually in the middle of the leaf, sometimes at the tip of one of the lobes, which is then bent under.