Download or read book Ecological Study of Aquatic Midges and Some Related Insects with Special Reference to Feeding Habits written by Adelbert Llewellyn Leathers and published by . This book was released on 1922 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Study of Aquatic Midges and Some Related Insects with Special Reference to Feeding Habits written by Adelbert L. Leathers and published by . This book was released on 2012-01-15 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1922. Not illustrated. Excerpt: ... method of spinning silk. The method by which Chironomus lobiferus larvae spin or spread out the silk used in the construction of their burrows and in the formation of the little conical nets mentioned above is very simple. The anterior pair of prolegs is the chief implement employed and so far as can be observed the only part of the body used for this purpose. The structure of these appendages takes on a new significance when function is suggested, and we at once notice the difference in structure between the anterior and posterior prolegs. The chitinous claws of the posterior pair are widened at their base (fig. 33), are few in number, and are arranged around the front and lateral margins of the prolegs (fig. 15). The muscles of the prolegs are so arranged as to set these hooks into the silken lining of the burrow, and thus hold the larva firmly in place. The hooks point outward and are so attached that by the contraction of the muscles of the proleg they are all brought close together in the center. When extended, the hooks all move outward in different directions, with the result that the prolegs are hooked fast to the silk lining of the burrow. Their function is preeminently that of an attachment, and it is to this specialization of the posterior appendages that the anterior prolegs owe their greater freedom of movement. The anterior prolegs are often mistaken for a part of the head because of their position just posterior to the dntinized portion of the head proper. They commonly appear as a mass of bristles radiating in all directions. From the side they appear as one, because they are always moved together and are so completely covered by relatively long spines that it is hard to see how they are attached. A sagittal view shows them to be made up of two r...

Download or read book Ecological Study of Aquatic Midges and Some Related Insects with Special Reference to Feeding Habits written by Adelbert Llewellyn Leathers and published by . This book was released on 1922 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Study Of Aquatic Midges And Some Related Insects With Special Reference To Feeding Habits Volumes 902 920 written by Adelbert Llewellyn Leathers and published by Wentworth Press. This book was released on 2019-04-12 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Ecological Study of Midges and Some Related Insects with Special Reference to Feeding Habits written by Adelbert L. Leathers and published by . This book was released on 1922 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Study of Aquatic Midges and Some Related Insects with Special Reference to Feeding Habits written by Adelbert Llewellyn Leathers and published by . This book was released on 1922 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the United States Bureau of Fisheries written by and published by . This book was released on 1922 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the Bureau of Fisheries written by and published by . This book was released on 1923 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology written by and published by . This book was released on 1926 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Animal Ecology written by Royal Norton Chapman and published by . This book was released on 1926 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Aquatic Insects of North America written by Richard W. Merritt and published by Kendall Hunt. This book was released on 1996 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bureau of Fisheries Document written by and published by . This book was released on 1922 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the United States Bureau of Fisheries written by United States. Bureau of Fisheries and published by . This book was released on 1924 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Bibliography and Keyword Index of the Biting Midges written by William R. Atchley and published by . This book was released on 1981 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States for the Period from to written by United States. Superintendent of Documents and published by . This book was released on 1896 with total page 2308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalogue of the Public Documents of the the Fifty third Congress to the 76th Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1896 with total page 2316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1931 with total page 2386 pages. Available in PDF, EPUB and Kindle. Book excerpt: