Excerpt from Revision of the Bark Beetles Belonging to the Genus Pseudohylesinus Swaine The most important secondary sexual differences in the elytra have to do with the vestiture. In the males the setae are usually both coarser and longer, and the scales more abundant and notably broader, than in the female. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.