The Dispersion of the Gipsy Moth (Classic Reprint)

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Excerpt from The Dispersion of the Gipsy MothThere is, however, another 'class' of insects which does not spread by ¿ying. Several distinct types exist, and among them may be mentioned such insects as the San Jose scale and other closely re lated species. The structure of the females of this group is Such that they remain fixed before becoming sexually mature, hence the distribution of the species is, confined, so far as natural means is concerned, to the dissemination of the young, which have the ability' to move about for a limited period. The adult insects are spread by artificial means on nursery stock and on living trees or shrubs that are shipped from one locality to another for planting or propagation. The brown-tail moth has also been distributed on nursery stock, but it is carried in. This way while the small caterpillars are ink'the hibernating webs Where they pass the winter.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. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.