Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . economicentomol00smit Year: 1906 282 A,V ECONOMIC ENTOMOLOGY. Fig. 310. The moth is dull ochre-yellow in color, more or less clouded with black in the middle of the wings, on each of which there is a transparent eye-like spot, divided transversely by a slender line and en- circled by yellow and black rings. Before and adjoining this spot in the hind wings is a large blue patch shading into black. With a very similar caterpillar and cocoon, the luna moth, Adias hma, is en
Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . economicentomol00smit Year: 1906 282 A,V ECONOMIC ENTOMOLOGY. Fig. 310. The moth is dull ochre-yellow in color, more or less clouded with black in the middle of the wings, on each of which there is a transparent eye-like spot, divided transversely by a slender line and en- circled by yellow and black rings. Before and adjoining this spot in the hind wings is a large blue patch shading into black. With a very similar caterpillar and cocoon, the luna moth, Adias hma, is entirely different from the poly- phemus. It is of an even, bluish-green color, sometimes verging into yellow- ish, with a little eye-like spot on all wings, the anterior border of the fore- wings margined with scarlet, while the hind wings are each furnished with a long tail. When these caterpillars are noticed on a cultivated plant they can be easily picked off and destroyed, but as a rule their natural enemies serve to keep them reduced to compara- tively small numbers. These Ameri- can species produce a much greater quantity of silk, of a much stouter texture than the Chinese silk-worm proper; but, unlike it, their thread cannot be reeled. It is this that makes it impossible to use our species suc- cessfully for the production of a cheap and strong silken fabric. We sometimes find on corn, clover, apple, and other plants or trees a green caterpillar, with a brown stripe edged with white on each side of the body, covered also with little processes, from which arise clusters of prickly spines. These have urticating proper- ties, so that if the larvae are carelessly handled a certain amount of irritation may arise, though much less than is the case with the Cocoon of the cecropia moth.
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