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Published online by Cambridge University Press: 31 May 2012
Eucosma Pergandeana, n. sp.— Expanse of wings, 16–20 mm. Head, palpi except a touch of fuscous on the outside, basal segment of the antennæ, whitel flagellum of antennæ fuscous, annulate with white. Thorax varying from white to pale straw colour.
Ground colour of fore wings white or pale cream colour; the outer half of the costa with about eight oblique fuscous lines, which are lost in the fuscous dorsal portion of the wing. The remaining portion of the wing is streaked longitudinally with fuscous, but so diffuse as to render the lines very indistinct, and the surface behind and beyond the cell is nearly unifromly pale grayish fuscous in some specimens; the ocelloid patch near the anal angle is represented by fragments of three fine blackish lines, more or less obliterated and broken by a short vertical bar of more of les distinct metallic pale gray scales; a similar one beyond follows the outer margin and joins the first below, but is broken near the middle of its course.