A Contribution to Insect Embryology, Vol. 1: An Inaugural Dissertation (Classic Reprint) - Softcover

Wheeler, William Morton

Softcover

ISBN 10: 1332309542 ISBN 13: 9781332309542

Verlag: Forgotten Books, 2015

Inhaltsangabe

Excerpt from A Contribution to Insect Embryology, Vol. 1: An Inaugural Dissertation

The very primitive and synthetic character of the Orthoptera has long been recognized by systematists and comparative anatomists, but the full importance of the group from an embryological standpoint has been but little appreciated, owing to the meagre and fragmentary nature of the observations hitherto published. For this reason I have made the Orthoptera the starting point of my studies, with a view to determining their relations, on the one hand to the Apterygota and on the other to the higher Pterygote orders. Only a portion of the evidence bearing on these relationships is presented in the following paper; a number of observations on the Malpighian vessels, corpus adiposum, oenocyte-clusters and abdominal appendages will be published as separate papers.

I have devoted more attention to Xiphidhim than to other Orthoptera, partly because the Locustidæ occupy a somewhat central position in the order, and partly because this curious form exhibits in its embryogeny better than any other insect hitherto studied, the co-existence of certain very ancient with very modern characters.

My German co-workers in the field of insect development will probably regard my treatment of the literature as rather perfunctory; but Prof. Graber, Dr. Heider and others have given from time to time such complete resumes of past and current literature that I feel justified in departing from the general custom.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2015
• Sprache: Englisch
• ISBN 10: 1332309542
• ISBN 13: 9781332309542
• Einband: Taschenbuch
• Anzahl der Seiten: 180
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