Tetragonopterus Cuvier, 1816

Silva, Gabriel S. C., Melo, Bruno F., Oliveira, Claudio & Benine, Ricardo C., 2016, Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species, Zootaxa 4200 (1), pp. 1-46: 10

publication ID

http://doi.org/10.11646/zootaxa.4200.1.1

publication LSID

lsid:zoobank.org:pub:911ECACD-8903-405E-AAA4-8300901D69C7

persistent identifier

http://treatment.plazi.org/id/03F47776-FFC0-5959-FF5C-BB0C37604093

treatment provided by

Plazi

scientific name

Tetragonopterus Cuvier, 1816
status

 

Tetragonopterus Cuvier, 1816 

Tetragonopterus Cuvier, 1816: 166  . Type species: Tetragonopterus argenteus Cuvier, 1816  . Type by monotypy. Gender: masculine.

Diagnosis. Tetragonopterus  is diagnosed within the Characidae  [except the Stethaprioninae  and Stichonodon insignis (Steindachner, 1876)  ] by the presence of only three supraneurals (vs. more than three supraneurals) and a branched laterosensory canal in the sixth infraorbital (vs. unbranched laterosensory canal). In addition, Tetragonopterus  can be diagnosed from other characids, including Stethaprioninae  and S. insignis  , by the presence of a lateral line strongly bent downward anteriorly (vs. lateral line straight or only slightly curved), its relative deep body, absence of a predorsal spine, a complete lateral line, and the presence of five multicuspidate teeth in the inner row of the premaxilla.

Distribution. Tetragonopterus  is widely distributed across the cis-Andean South American freshwaters, including the Amazon, Orinoco, Guianas, Parnaíba, Jaguaribe, Itapicuru, Paraguaçu, São Francisco, Paraguay, and lower Paraná river basins ( Fig. 2).

Etymology. Tetra  from Greek, meaning four; gonia from Greek, meaning angle; pteron from Greek, meaning fin, in a clear allusion to the evident tetragonal shape of the body.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Anthribidae

Loc

Tetragonopterus Cuvier, 1816

Silva, Gabriel S. C., Melo, Bruno F., Oliveira, Claudio & Benine, Ricardo C. 2016

2016
Loc

Tetragonopterus

Cuvier 1816: 166