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Dianema Cope 1872

Roberto E. Reis
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Type-species: Dianema longibarbis Cope, 1872.
See the Complete Catalogue for authorships, synonyms, type-localities, and references.

Containing group: Callichthyidae

Diagnosis

Dianema is diagnosed by the first infraorbital bone not articulating with the lateral ethmoid; metapterygoid with an interdigitated suture with the quadrate; and lower lip with two small barbels on each side. In addition to these features, Dianema shares with Corydoras hastatus and C. pymaeus the habit of swimming in midwater, far from the bottom.

Distribution

The two species of Dianema share approximately the same distribution, and are found in the rio Amazonas and lower courses of its tributaries.

Key to the Species of Dianema

Title Illustrations
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Scientific Name Dianema longibarbis
Location Genaro Herrera, Loreto, Peru
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © Roberto E. Reis
About This Page

Roberto E. Reis
Museu de Ciências e Tecnologia da PUCRS, Porto Alegre, Brazil

Page: Tree of Life Dianema Cope 1872. Authored by Roberto E. Reis. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Reis, Roberto E. 1996. Dianema Cope 1872. Version 29 April 1996 (under construction). http://tolweb.org/Dianema/15337/1996.04.29 in The Tree of Life Web Project, http://tolweb.org/

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