Appearance
The wingspan is 18–23 millimetres. Adults have dark grey forewings mottled with black. They are on wing in spring and fall and have been recorded feeding on the flower nectar of "Salix" species.
Food
The larvae feed on Scrophulariaceae, Geraniaceae, Primulaceae, Labiatae and Caprifoliaceae species, including "Castilleja" species, "Pedicularis furbishiae" and "Scrophularia californica", "Penstemon whippleanus". They feed externally on the foliage and flower buds of their host plant, but also bore into the seedpods and mine the leaves. The species overwinters as an adult.References:
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