The Odonata of Canada and Alaska: The Anisoptera-three families, by E. M. Walker, P. S. Corbet
Author: Edmund Murton Walker
Publisher:
Published: 1953
Total Pages: 342
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Edmund Murton Walker
Publisher:
Published: 1953
Total Pages: 342
ISBN-13:
DOWNLOAD EBOOKAuthor: Edmund M. Walker
Publisher: University of Toronto Press
Published: 1975-01-01
Total Pages: 378
ISBN-13: 1442638788
DOWNLOAD EBOOKDr. Walker and Dr. Corbet make a signal contribution in gathering together all available information on the dragonflies of Canada and Alaska. The order as a whole and the zygoptera are covered. The treatment is not confined to taxonomy and geographical distribution, but includes data on habitats, seasons of adult life, and brief notes on habits when these are available.
Author: Edmund Murton Walker
Publisher:
Published: 1953
Total Pages: 356
ISBN-13:
DOWNLOAD EBOOKComprehensive study of dragonflies.
Author:
Publisher:
Published: 1987
Total Pages: 942
ISBN-13:
DOWNLOAD EBOOKAuthor: Kenneth J. Tennessen
Publisher: Springer
Published: 2019-03-11
Total Pages: 627
ISBN-13: 3319977768
DOWNLOAD EBOOKThis monograph is the first of its kind devoted entirely to the dragonfly nymphs of North America north of Mexico, the focus being accurate identification of the 330 species of Anisoptera that occur in the region. Nymphal external morphology is described and illustrated in detail, and all terms needed to navigate the dichotomous keys are defined. Species are tabulated with references that provide the most detailed, accurate descriptions for each; species that are inadequately described are so indicated. The key separating the seven families in the region contains several new characters. The families are then covered separately: Aeshnidae (13 genera), Gomphidae (17 genera), Petaluridae (2 genera), Cordulegastridae (2 genera), Macromiidae (2 genera), Corduliidae (7 genera), and Libellulidae (29 genera). Each family is further characterized, followed by a generic key. A drawing of the habitus and diagnostic details for each genus are provided, along with additional diagnostic remarks and notes on habitat and life cycle; for each genus, a map shows its geographic distribution in North America. Full-grown nymphs of all known species of each genus are keyed and diagnosed; characters that apply to earlier instars are noted. Morphological variation in character states was analyzed in order to assess the reliability of previously utilized characters and to discover new characters. Most of the characters used to distinguish all levels of taxa are illustrated; a total of 702 figures, comprising 1,800 original drawings, along with selected photographs where necessary for clarity, accompany the keys. Measurements of total length, head width, and other variables for each species are provided in tables. Difficulties with past keys and descriptions, including errors, omissions and other shortcomings, are addressed. The importance of nymph characters in helping solve generic and specific distinctions and their role in phylogenetic studies is emphasized. Methods for collecting, rearing, and preserving dragonfly nymphs and exuviae are presented. The final chapter discusses research opportunities on North American Anisoptera nymphs, including taxonomic needs, studies on structure and function, life history and microhabitat, water quality indices and conservation efforts. The habitus drawings of all genera are arranged according to family in five plates (Appendix I); although the book is intended as a lab manual, these plates conveniently allow for comparison based on nymph shape making field identification to genus possible in many cases. Appendix II contains a brief history of dragonfly nymph studies in North America. A glossary and an index to scientific names are included.
Author: Donald F. McAlpine
Publisher: NRC Research Press
Published: 2010
Total Pages: 802
ISBN-13: 0660198355
DOWNLOAD EBOOKAuthor: Hugh F. Clifford
Publisher: University of Alberta
Published: 1991
Total Pages: 594
ISBN-13: 9780888642349
DOWNLOAD EBOOKA great diversity of invertebrate life lives beneath the surface of Alberta's lakes and streams. Aquatic Invertebrates of Alberta complements existing field guides to organisms in Alberta, covering all major groups of aquatic invertebrates. Colour photographs, pictorial keys, and 114 whole-specimen drawings complement the text. This book is only available through the University of Alberta Bookstore (print-on-demand).
Author:
Publisher: DIANE Publishing
Published: 2002
Total Pages: 57
ISBN-13: 1428905243
DOWNLOAD EBOOKAuthor: W. Patrick McCafferty
Publisher: Jones & Bartlett Learning
Published: 1983
Total Pages: 502
ISBN-13: 9780867200171
DOWNLOAD EBOOKWritten in language that is accessible to the sports fisherman and the naturalist and with over 1,000 original illustrations, the book includes features such as coverage of all insect families and genera important to fly fishing; comphrensive treatment of the biology of all life stages of aquatic insects including terrestrial as well as aquatic stages; special chapters on shore dwelling insects, insects associated with aquatic vascular plants, residents of tree holes and plant cups, aquatic arachnids and freshwater crustaceans.