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Neotropical Ichthyology, 3(4):533-542, 2005 Copyright 2005 Sociedade Brasileira de Ictiologia
 

Summary: 533
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Neotropical Ichthyology, 3(4):533-542, 2005
Copyright © 2005 Sociedade Brasileira de Ictiologia
Baryancistrus demantoides and Hemiancistrus subviridis, two new uniquely
colored species of catfishes from Venezuela (Siluriformes: Loricariidae)
David C. Werneke*, Mark H. Sabaj**,
Nathan K. Lujan*, and Jonathan W.Armbruster***
Baryancistrus demantoides and Hemiancistrus subviridis are two new species of loricariids from southern Venezuela with an
olive ground coloration and white to cream-colored or golden-yellow spots. Baryancistrus demantoides is known only from
the upper río Orinoco drainage while H. subviridis is also known from the río Casiquiare drainage. In addition to its coloration,
B. demantoides can be distinguished from all other ancistrins by having the dorsal and adipose fins connected by an expanded
posterior section of the dorsal-fin membrane, golden-yellow spots confined to the anterior portion of the body, and greater
than 30 teeth per jaw ramus. Hemiancistrus subviridis can be separated from all other ancistrins by coloration, lacking a
connection between the dorsal and adipose fins and having less than 30 teeth per jaw ramus.
Baryancistrus demantoides e Hemiancistrus subviridis são duas espécies novas de loricariídeos do sul da Venezuela, de cor
de fundo verde-oliva e manchas brancas a creme ou amarelo-douradas. Baryancistrus demantoides é conhecida somente da
bacia do rio Orinoco superior, enquanto H. subviridis é também conhecida da bacia do rio Casiquiare. Além da coloração, B.

  

Source: Armbruster, Jonathan W. - Department of Biological Sciences, Auburn University

 

Collections: Environmental Sciences and Ecology