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Published online by Cambridge University Press: 31 May 2012
Colias Behrii, Edw.
Egg.—Spindle shapted, a little contraced just before the tip, with low longitudinal and transverse ridges, which divide the surface into shallow, rectangular parallelograms. Length, 1.3 mm.; width, .6 mm. The eggs are laid singly on the upper side of the leaves of a species of ground huckleberry, its food plant.
First stage.—Head rounded, dark brown; width; .25 mm. Body of normal shape, sordid whitish, apparently without marks; minutely pilose.