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Published online by Cambridge University Press: 31 May 2012
Heterochroa californicaButler.
Egg.—Nearly spherical, flattened a little at base; covered with hexagonal elevated reticulations, from the intersections of which arise short spines. Colour uniform leaf-green, with a silvery lustre; width 1.5 mm. Laid singly at the tip of a leaf on the upper side. Duration of this stage eleven days.