The Odonata Of Canada And Alaska The Anisoptera Three Families By E M Walker P S Corbet
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The Odonata Of Canada And Alaska The Anisoptera Three Families By E M Walker P S Corbet
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Author : Edmund Murton Walker
language : en
Publisher:
Release Date : 1953
The Odonata Of Canada And Alaska The Anisoptera Three Families By E M Walker P S Corbet written by Edmund Murton Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with Insects categories.
The Odonata Of Canada And Alaska
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Author : EDMUND WALKER (M.; CORBET, PHILIP, S.)
language : en
Publisher:
Release Date : 1975
The Odonata Of Canada And Alaska written by EDMUND WALKER (M.; CORBET, PHILIP, S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Dragonflies categories.
Dr. Walker and Dr. Corbet make a signal contribution in gathering together all available information on the dragonflies of Canada and Alaska.
The Odonata Of Canada And Alaska
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Author : Edmund Murton Walker
language : en
Publisher:
Release Date : 1958
The Odonata Of Canada And Alaska written by Edmund Murton Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Dragonflies categories.
The Odonata Of Canada And Alaska The Anisoptera Three Families
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Author : Edmund Murton Walker
language : en
Publisher:
Release Date : 1998
The Odonata Of Canada And Alaska The Anisoptera Three Families written by Edmund Murton Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Insects categories.
The Odonata Of Canada And Alaska
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Author : Edmund M. Walker
language : en
Publisher: University of Toronto Press
Release Date : 1975-01-01
The Odonata Of Canada And Alaska written by Edmund M. Walker and has been published by University of Toronto Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975-01-01 with Science categories.
Dr. 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.
The Odonata Of Canada And Alaska The Anisoptera Three Families
DOWNLOAD
Author : Edmund Murton Walker
language : en
Publisher:
Release Date : 1953
The Odonata Of Canada And Alaska The Anisoptera Three Families written by Edmund Murton Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with Nature categories.
Comprehensive study of dragonflies.
The Odonata Of Canada And Alaska
DOWNLOAD
Author : Edmund M. Walker
language : en
Publisher:
Release Date : 1975
The Odonata Of Canada And Alaska written by Edmund M. Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Odonata categories.
The Odonata Of Canada And Alaska Volume Two Part Iii The Anisoptera Four Families
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Author : Edmund M. Walker
language : en
Publisher: University of Toronto Press
Release Date : 1958-01-01
The Odonata Of Canada And Alaska Volume Two Part Iii The Anisoptera Four Families written by Edmund M. Walker and has been published by University of Toronto Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958-01-01 with Nature categories.
Dr. Walker makes 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.
The Odonata Of Canada And Alaska
DOWNLOAD
Author : Edmund Murton Walker
language : en
Publisher:
Release Date : 1958
The Odonata Of Canada And Alaska written by Edmund Murton Walker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with categories.
Dragonfly Nymphs Of North America
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Author : Kenneth J. Tennessen
language : en
Publisher: Springer
Release Date : 2019-03-11
Dragonfly Nymphs Of North America written by Kenneth J. Tennessen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-11 with Science categories.
This 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.
