The Aphididae of the Canadian Arctic (Homoptera)

Abstract Eighteen species are listed of which eight are described as new. Most of these species were collected in the more southerly parts of the Canadian Arctic, but two species were collected at Lake Hazen which is situated in the extreme northeastern portion of Ellesmere Island. The majority of t...

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Bibliographic Details
Published in:The Canadian Entomologist
Main Author: Richards, W. R.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1963
Subjects:
Insect Science
Molecular Biology
Physiology
Ecology, Evolution, Behavior and Systematics
Structural Biology
Arctic
Ellesmere Island
Lake Hazen
Online Access:http://dx.doi.org/10.4039/ent95449-5
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00077361
Description
Summary:Abstract Eighteen species are listed of which eight are described as new. Most of these species were collected in the more southerly parts of the Canadian Arctic, but two species were collected at Lake Hazen which is situated in the extreme northeastern portion of Ellesmere Island. The majority of the species belong to well known Holarctic genera. Characteristically Palaearctic groups are represented by five species, but exclusively Nearctic groups are represented by a single species. The most conspicuous biological feature is the apparent reversal of the switch mechanism governing the production of sexuales since, in spite of the excessively long photoperiod, oviparae are common.

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