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Phylogenetic relationships within hump-winged grigs, Cyphoderris (Insecta, Orthoptera, Tettigonioidea, Haglidae)

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The genus Cyphoderris, or hump-winged grigs, is represented by three species of cold-adapted, acoustic Ensifera with a geographic distribution that is generally restricted to the high-elevation coniferous forests of western North America. A phylogenetic analysis based on 29 morphological and 3 behavioural characters produced one tree, (C. buckelli (C. strepitans, C. monstrosa)) with a consistency index of 1.0. We discuss possible explanations for the observation that almost all of the autapomorphic change was concentrated in C. monstrosa.

Le genre Cyphoderris, des grillons haglidés, est représenté par trois espèces d'ensifères adaptés au froid et producteurs de sons, dont la répartition géographique est généralement restreinte aux forêts de conifères de haute altitude de l'ouest de l'Amérique du Nord. Une analyse phylogénétique basée sur 29 caractères morphologiques et 3 caractères comportementaux produit l'arbre (C. buckelli, (C. strepitans, C. monstrosa)) avec un indice de cohérence de 1,0. La discussion présente des explications possibles du fait que presque tout le changement autapomorphique s'est produit chez C. monstrosa.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: July 1, 2005

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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