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DESCRIPTION OF THE PREPARATORY STAGES OF ARGYNNIS HESPERIS, Edw
Published online by Cambridge University Press: 31 May 2012
Extract
Egg.—Conodial, round-topped, nearly as broad at base as high, the top depressed; marked by about 19 thin, elevated, vertical ribs, one half running from base to summit, the others but four fifth or more the distance; the spaces between crossed by many low horizontal ridges; the micropyle surronded by two or three circles of very fine depressions, outside of which are rows of very large four or five-sided depressed cells; color yellow-green. Duration of this stage about ten days.
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