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A SYNOPSIS OF THE DYTISCIDAE OF THE GALAPAGOS ISLANDS, ECUADOR, WITH DESCRIPTION OF RHANTUS GALAPAGOENSIS SP.NOV. (COLEOPTERA: DYTISCIDAE)1

Published online by Cambridge University Press:  31 May 2012

Stewart B. Peck  and
Michael Balke
Stewart B. Peck
Affiliation:
Department of Biology, Carleton University, Ottawa, Ontario, Canada K1S 5B6
Michael Balke
Affiliation:
Pfarrlandstraβe la, D-1000 Berlin 37, Germany
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Abstract

A summary of distribution and biology of the five species of Galapagos Dytiscidae is given, along with a key for identification. Rhantus galapagoensis sp.nov. Balke and Peck is described from San Cristobal Island, Galapagos; important features are illustrated. The source of the dytiscid fauna is tropical America. The limited diversity of the dytiscid fauna is probably caused less by problems of dispersal and more by problems of colonization of islands that experience intense periodic drought.

Résumé

On trouvera ici un compte-rendu sommaire de la répartition et de la biologie de cinq espèces de Dytiscidae des îles Galapagos ainsi qu’une description illustrée de Rhantus galapagoensis sp.nov. Balke et Peck de l’île San Cristobal dans l’archipel des Galapagos. La faune des dytiques des Galapagos est originaire de l’Amérique tropicale. La diversité limitée de cette faune n’est apparemment pas tant attribuable à des problèmes de dispersion qu’à des problèmes de colonisation des îles soumises à des périodes de grande sécheresse.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 2 , April 1993 , pp. 259 - 266
Copyright
Copyright © Entomological Society of Canada 1993

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