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HISTORY OF THE PREPARATORY STAGES OF COLIAS ALEXANDRA, Edw
Published online by Cambridge University Press: 31 May 2012
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EGG.—Fusiform, thick in middle, tapering both ways, the base a little broader than the summit; some examples have the side convex from middle to either end, but other have the upper half a little incurved; ribbed longitudinally, the number of ribs sixteen, three or four of which end at about four fifts the distance from base; ribs low; narrow, the spaces between flat, and crossed by many fine ridges; top rounded; the micropyle is in centre of a rosette of fine cells, outside of which is a ring of larger ones; color yellow-green. Duration of this stage four days.
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- Copyright © Entomological Society of Canada 1887