Excerpt from The Imported Pine SawflyTable 6 records the results of some experiments to determine the length of the prepupal period and the time spent within the cocoon. The prepupal period as recorded In this table 1s not separated from the pupal period. It Is difficult to determine the exact duration of the pupal period. It seems to be brief and the pupa is seldom obtained by cutting open cocoons, the insects being nearly always found In the prepupal or In the unemerged or immature adult stage.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work.

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