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Oxyropsis ephippia, a New Hypoptopomatine Catfish (Siluriformes: Loricariidae) from Guyana
Journal article   Peer reviewed

Oxyropsis ephippia, a New Hypoptopomatine Catfish (Siluriformes: Loricariidae) from Guyana

Adriana E Aquino and Mark H Sabaj Pérez
Zootaxa, v 4136(1), pp 129-140
05 Jul 2016
PMID: 27395707

Abstract

Animal Distribution Animal Structures - anatomy & histology Animal Structures - growth & development Animals Body Size Catfishes - anatomy & histology Catfishes - classification Catfishes - growth & development Ecosystem Female Guyana Male Organ Size
Oxyropsis ephippia, a new species of loricariid catfish in the subfamily Hypoptopomatinae, is described from the Essequibo and Branco basins, Guyana. Based on the presence of a keel-like row of relatively enlarged odontodes on trunk median plates immediately above the lateral line canal, the new species is assigned to the genus Oxyropsis Eigenmann & Eigenmann 1889. It can be distinguished from its congeners by having the keel-like row on each median plate dominated by a single odontode (one closest to the posterior margin of the plate) conspicuously larger than preceding ones, and by having the sides of the trunk below the median series (approximately between median plates 7 to 12) shielded only by plates of the midventral series, with the exclusion of plates from the ventral series. The report of O. ephippia from the Essequibo is the first record of the genus in a river system that drains the north-central portion of the Guiana Shield into the Atlantic Ocean.

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#15 Life on Land
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Collaboration types
Domestic collaboration
Web of Science research areas
Zoology
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