Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Groundsnakes of the Lost World: A Review of Atractus (Serpentes: Dipsadidae) from the Pantepui Region, Northern South America

Groundsnakes of the Lost World: A Review of Atractus (Serpentes: Dipsadidae) from the Pantepui... A bstract : We review the taxonomic status of the snakes belonging to the genus Atractus from the Pantepui region on the basis of morphological characters (meristic, morphometric, color pattern, and hemipenis). We redescribe and illustrate the holotype of A. insipidus , correcting the elevation of the type locality and providing its exact coordinates. We report the third known specimen of A. riveroi on the basis of an individual collected in the Sierra Parima close to the Venezuela/Brazil border. We report the geographical variation of A. steyermarki , expanding its known distribution on the basis of specimens collected in Guyanese tepuis, and consider the species a senior synonym of A. guerreroi . We also report the geographical variation in meristic, morphometric, color pattern, and hemipenial characters of A. tamessari on the basis of the discovery of new specimens. Finally, we provide a key to the Atractus of the Guiana Shield and discuss on the evolution of some particular features of hemipenial morphology in the genus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Herpetological Monographs Allen Press

Groundsnakes of the Lost World: A Review of Atractus (Serpentes: Dipsadidae) from the Pantepui Region, Northern South America

Loading next page...
 
/lp/allen-press/groundsnakes-of-the-lost-world-a-review-of-atractus-serpentes-lgapDRbTEB
Publisher
Allen Press
Copyright
The Herpetologists' League, Inc.
Subject
Articles
ISSN
0733-1347
eISSN
1938-5137
DOI
10.1655/HERPMONOGRAPHS-D-12-00001R2.1
Publisher site
See Article on Publisher Site

Abstract

A bstract : We review the taxonomic status of the snakes belonging to the genus Atractus from the Pantepui region on the basis of morphological characters (meristic, morphometric, color pattern, and hemipenis). We redescribe and illustrate the holotype of A. insipidus , correcting the elevation of the type locality and providing its exact coordinates. We report the third known specimen of A. riveroi on the basis of an individual collected in the Sierra Parima close to the Venezuela/Brazil border. We report the geographical variation of A. steyermarki , expanding its known distribution on the basis of specimens collected in Guyanese tepuis, and consider the species a senior synonym of A. guerreroi . We also report the geographical variation in meristic, morphometric, color pattern, and hemipenial characters of A. tamessari on the basis of the discovery of new specimens. Finally, we provide a key to the Atractus of the Guiana Shield and discuss on the evolution of some particular features of hemipenial morphology in the genus.

Journal

Herpetological MonographsAllen Press

Published: Dec 1, 2013

Keywords: Key words : Gran Sabana ; Guiana Shield ; Hemipenis morphology ; Highland Atractus ; Pantepui

There are no references for this article.