Project 2521: T. P. Carvalho, J. G. Lundberg, J. N. Baskin, J. P. Friel, R. E. Reis. 2016. A new species of the blind and miniature genus Micromyzon Friel and Lundberg, 1996 (Silurifomes: Aspredinidae) from the Orinoco River: describing catfish diversity using high-resolution computed tomography. Proceedings of the Academy of Natural Sciences of Philadelphia. 165 (1):37-53.
Specimen: Micromyzon orinoco Carvalho, Lundberg, Baskin, Friel, and Reis, 2016 (ANSP/198335)
Abstract
A new species of the aspredinid catfish tribe Hoplomyzontini Micromyzon is described from two specimens collected with trawl nets in two localities, at 10 and 18 m depth, in the main channel of the lower Orinoco River in Venezuela almost 40 years ago. The new species is distinguished from its only congener, Micromyzon akamai, by the: straight anterior margin of the mesethmoid; open posterior cranial fontanel; ossified first pectoral-fin radial; single tubular infraorbital bone; infraorbital sensory canal entering neurocranium via the frontal; enclosed foramen for the abductor superficialis muscle in the coracoid; higher vertebral count (33 vs. 28–32); higher anal-fin ray count (10 or 11 vs. 7–9); and some morphometric features.The holotype of the new species was scanned using High-Resolution X-ray Computed Tomography to illustrate, describe, and compare its bony skeleton to other hoplomyzontins.
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Article DOI: 10.1635/053.165.0104
Project DOI: 10.7934/P2521, http://dx.doi.org/10.7934/P2521
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MorphoBank Project 2521
MorphoBank Project 2521
- Creation Date:
23 August 2016 - Publication Date:
03 January 2017 - Project views: 92707
- Media downloads: 3
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Authors' Institutions
- Academy of Natural Sciences of Drexel University, Philadelphia
- California State Polytechnic University - Pomona
- Universidade Federal do Rio Grande do Sul
- Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS)
- Drexel University
- Natural History Museum of Los Angeles County
- University of Alabama
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| Tiago Carvalho Project Administrator | 2 | 2 | 987 | 986 |
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