The Henicopidae Of America North Of Mexico

Author : Ralph Vary Chamberlin
Publisher : Forgotten Books
ISBN 13 : 9781330245217
Total Pages : 58 pages
Book Rating : 4.2/5 (452 download)

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Download or read book The Henicopidae of America North of Mexico written by Ralph Vary Chamberlin and published by Forgotten Books. This book was released on 2015-06-27 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Henicopidae of America North of Mexico The genus Henicops was proposed by Newport in 1844 for two species, H. maculatus, from Van Diemen Land, and H. emarginatus, from New Zealand. Twenty-four years later Meinert described from Europe a species obviously related to these, placing it under a new genus as Lamyctes fulvicornis; but by common consent subsequent workers have, until recently, dropped Lamyctes as a synonym of Henicops. However, in 1901, Pocock restudied Newport's species and pointed out that maculatus, which he specified as the type of Henicops, differed from the European species in having the tarsi of the fourteenth and fifteenth pairs of legs, six segmented and those of the anterior pairs trisegmented, the last three pairs of legs in fulvicornis having the tarsi only bisegmented and the anterior legs having the tarsi wholly undivided. In accordance with these important differences Pocock again recognized Lamyctes as a distinct genus, at the same time describing two new genera evidently closely allied, Haasiella and Paralamyctes. Other genera having more or less close affinities with Henicops and Lamyctes have also been described by Silvestri and by the present writer. Silvestri and Pocock place these genera, which, it may be noted, occur in the main in the Southern Hemisphere, in a family Henicopidae in contrast particularly with the Lithobiidae, including Lithobius and allies which abound for the most part in the Northern Hemisphere; but Verhoeff in his recent revision of the Lithobiomorpha in Die klassen und ordnungen des thierreichs (1907, 5, p. 245f), does not recognize the family, denying the sufficiency of the basis for it. Careful study of the genera of the Lithobiomorpha, however, makes it very obvious that these (omitting those of the Cermatobiidae) fall into two compact and clearly separated groups and that, as one of these, the Henicopidae must be given recognition as a distinct and well-defined family. 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.