Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . economicentomolo00insmit Year: 1896 28o ^-V ECONOMIC ENTOMOLOGY. large and dense cocoon of silk, in which they remain until ready to transform into moths. The most common of these spinners is the cecropia, Platysamia cecropia, the caterpillar occurring on a great variety of plants, including many of our fruit-trees and

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