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Publications. Entomology Volume 9 (Paperback) Loot Price: R627
Discovery Miles 6 270
Publications. Entomology Volume 9 (Paperback): Cornell University Station

Publications. Entomology Volume 9 (Paperback)

Cornell University Station

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Loot Price R627 Discovery Miles 6 270 | Repayment Terms: R58 pm x 12*

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...before the legs; and in a few the last pair of legs and the last segments of the abdomen remain longest in the old skin. These rather distinct types of ecdysis may be illustrated by the common species Vanduzea arquala, Thelia bimaculata, and Ceresa borealis. In Vanduzea arquata the nymph attaches itself securely by the first pair of legs to the underside of a leaf. The splitting begins over the thorax and the dorsal part of the thorax emerges first; this is followed by the head, then the legs, and then the abdomen. The old skin is very perfect and remains attached to the leaf. In Thelia bimaculata the insect is not attached. The splitting begins over the head and this part of the body emerges first; then the thorax appears and the integument breaks around the coxae and the femora, leaving pieces of old skin attached to the legs for some time after ecdysis is completed; the abdomen is then removed, and lastly the legs.. The old skin is very imperfect, being much broken and torn, and drops to the ground after the process is completed. In Ceresa borealis the insect is not attached. The splitting begins over the head and gradually continues over the thorax and the abdomen. The head emerges first, then the thorax, then the first half of the abdomen, then the legs, and then the posterior half of the abdomen. The old skin is very perfect and remains attached to the tip of the abdomen, where it is dragged behind for some time. The time required for the process is not subject to great variation within a species, but is rather different in various genera and usually ranges from five to forty-five minutes. The least time noted in field records for the process is three minutes, for Encheriopa binotata, and the greatest is seventy-five minutes, for Telamona ampelopsidis...

General

Imprint: Rarebooksclub.com
Country of origin: United States
Release date: March 2012
First published: March 2012
Authors: Cornell University Station
Dimensions: 246 x 189 x 13mm (L x W x T)
Format: Paperback - Trade
Pages: 242
ISBN-13: 978-1-130-20569-5
Categories: Books
LSN: 1-130-20569-X
Barcode: 9781130205695

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