An Annotated Catalogue Of The New World Therevidae Insecta Diptera Asiloidea

Author : C. R. Osten-Sacken
Publisher : Forgotten Books
ISBN 13 : 9780267402915
Total Pages : 330 pages
Book Rating : 4.4/5 (29 download)

DOWNLOAD NOW!

Download or read book Catalogue of the Described Diptera of North America (Classic Reprint) written by C. R. Osten-Sacken and published by Forgotten Books. This book was released on 2018-02-24 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Catalogue of the Described Diptera of North America Specific names in the old, and sixty-six in the new Catalogue. But, in comparing these two lists, we find that they have only eleven names in common. In other words, of the forty-two so called species of Trypeta of the old Catalogue, only eleven are adopted now as specific names in that genus; the other thirty one names proved, upon investigation, to be either synonyms, or to represent species which had been erroneously placed in the genus Trypeta, or else to be unavailable names, on account of the insufficiency of the descriptions. The difference between eleven and sixty-six (the number of species in the new Catalogue), represents therefore the addition made to the knowledge of the genus Trypeta in North America during the interval between the two catalogues. Other genera give similar results. Thirty-two species of Doliehopus were described previous to 1858; the present list contains fifty-nine; but both lists have only two specific names in common. Thirty of the earlier descriptions are unrecognizable and therefore useless. The old Catalogue contained 82 names of species of Eristalis, occurring in North America, north of Mexico; of these names only nine figure as species of Eristalis in the present Catalogue, altho gh the de finition of the genus has not been changed since then. The other names of the old Catalogue are either synonyms (e. Dimidiatus, for instance, has been described under six different names), or they belong to other genera, as Helophilizs, Milesia, even Xylem. The genus Tabanus, in the Old Catalogue, contains one hundred and two names of species, from North America, north of Mexico; among these names only 36 could be adopted; the remainder are either synonyms, or absolutely unavailable, on account of the insufficiency of the descriptions. These instances will suffice to show that the new Catalogue is, not merely a new edition of the old one, only supplemented by the new species, published between 1858 and 1878; it is a new work, prepared on a diffe rent plan. 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.