A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina

We describe Hoplias mbigua, a new species of the genus from the lower Paraná, in Misiones, with tooth-bearing plates on dorsal surface of basihyal and basibranchials and medial margins of contralateral dentaries converging towards the mandibular symphysis in ventral view, characters that permit to i...

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Autores principales: Azpelicueta, María de las Mercedes, Benítez, Mauricio Fabián, Aichino, Danilo Ramón, Mendez, Carlos María Damián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Naturales
Characiformes
Hoplias
Lower Paraná
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/100014
https://ri.conicet.gov.ar/11336/45064
http://www.lillo.org.ar/publicaciones/acta-zoologica-lilloana/v59n1_2/a04
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-100014
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Characiformes
Hoplias
Lower Paraná
spellingShingle Ciencias Naturales
Characiformes
Hoplias
Lower Paraná
Azpelicueta, María de las Mercedes
Benítez, Mauricio Fabián
Aichino, Danilo Ramón
Mendez, Carlos María Damián
A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
topic_facet Ciencias Naturales
Characiformes
Hoplias
Lower Paraná
description We describe Hoplias mbigua, a new species of the genus from the lower Paraná, in Misiones, with tooth-bearing plates on dorsal surface of basihyal and basibranchials and medial margins of contralateral dentaries converging towards the mandibular symphysis in ventral view, characters that permit to include the species in the H. malabaricus group. The presence of five brown bands transversely placed on lower jaw distinguishes the new species from its congeners, excluding H. microlepis (vs. lower jaw straight or with small black or brown dots uniformly distributed). The number of circunpeduncular scales in H. mbigua is 20 whereas H. teres and H. malabaricus have 18 circunpeduncular scales and H. microlepis 22-24 and 12-16 gill rakers on first epibranchial (vs. about 9). Hoplias mbigua has convex dorsal profile between head and dorsal fin whereas H. teres has straight dorsal profile. Hoplias mbigua has a large supraopercle, with its anterior margin contacting the in- fraorbitals 5 and 6 whereas H. cf. malabaricus has a short supraopercle, with an anterior margin scarcely extended before anterior opercular margin. Hoplias mbigua has a large tooth-plate on basihyal and basibranchials instead of two lines of tooth-plates at sides of bones in H. cf. malabaricus.
format Articulo
Articulo
author Azpelicueta, María de las Mercedes
Benítez, Mauricio Fabián
Aichino, Danilo Ramón
Mendez, Carlos María Damián
author_facet Azpelicueta, María de las Mercedes
Benítez, Mauricio Fabián
Aichino, Danilo Ramón
Mendez, Carlos María Damián
author_sort Azpelicueta, María de las Mercedes
title A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
title_short A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
title_full A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
title_fullStr A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
title_full_unstemmed A new species of the genus <i>Hoplias</i> (Characiformes, Erythrinidae), a tararira from the lower Paraná River in Misiones, Argentina
title_sort new species of the genus <i>hoplias</i> (characiformes, erythrinidae), a tararira from the lower paraná river in misiones, argentina
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/100014
https://ri.conicet.gov.ar/11336/45064
http://www.lillo.org.ar/publicaciones/acta-zoologica-lilloana/v59n1_2/a04
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