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

  • Stewart B. Peck (a1) and Michael Balke (a2)

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.

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]

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

  • Stewart B. Peck (a1) and Michael Balke (a2)

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