Description of a new Hemigrammus Gill (Characiformes: Characidae) from the río Madeira basin in Peru and Bolivia

Rafaela P. Ota; Flávio C.T. Lima; Max H. Hidalgo

doi:10.11646/zootaxa.4577.2.6

Description of a new Hemigrammus Gill (Characiformes: Characidae) from the río Madeira basin in Peru and Bolivia

Rafaela P. Ota, Flávio C.T. Lima, Max H. Hidalgo

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We described herein a new Hemigrammus from the río Madre de Dios and rio Mamoré basins in southeastern Peru and Bolivia. The new species possess a color pattern similar to those belonging to the Hemigrammus lunatus species-group, i.e., a broad longitudinal dark stripe across the eye and a conspicuous, narrow dark stripe along the anal-fin basis. It can be easily diagnosed from the species belonging to this group by presenting the combination of the following characters: an oval, horizontally elongated humeral blotch, 6-7 upper branch and 10-12 lower branch gill-rakers, up to five cusps on broader maxillary teeth, and by lacking a midlateral dark stripe. Comments on its putative relationships are provided. Additionally, we updated the geographical distribution of Hemigrammus lunatus and H. machadoi based on an exhaustive survey of material deposited in collections. [Species Zoobank registration: urn:lsid:zoobank.org:act:A2ED5D61-8434- 4A0F-BC5B-B496FB3DC191].

Original language	English
Pages (from-to)	335-347
Number of pages	13
Journal	Zootaxa
Volume	4577
Issue number	2
DOIs	https://doi.org/10.11646/zootaxa.4577.2.6
State	Published - 2019

Bibliographical note

Funding Information:
We are grateful to Hernán Ortega and Nicol Faustino (MUSM), Ramiro Barriga (MEPN), Raphael Covain (MHNG), Jeff Clayton, Kris Murphy, G. David Johnson, Sandra Raredon, and Jeffrey Williams (USNM), Dave Catania, and Luiz Rocha (CAS), Jonathan Armbruster and Dave Werneke (AUM), Douglas Nelson (UMMZ), Caleb Macmahan, Kevin Swagel, and Susan Mochel (FMNH), Karsten Hartel, and Andrew Williston (MCZ), Mark Sabaj. Mariangeles Arce, and John Lundberg (ANSP), Wolmar Wosiacki, and Isaura Maschio (MPEG), Sven Kullander, Erik Ahlander, and Bo Delling (NRM), Aléssio Datovo, Michel Gianeti, and Osvaldo Oyakawa (MZUSP), and Claudio Oliveira and Ricardo Benine (LBP) for assistance during visits to their institutions and-or loan of material under their care. Eduardo G. Baena prepared Fig. 1. We are also grateful to Willian M. Ohara (UNIR) for providing data from the lots of H. changae deposited at the CBF and MNKP collections, and to Renildo Oliveira and Cárlison Oliveira (INPA) for assistance with clearing and staining specimens, as well with Fig. 2. Brian Perkins provided pictures of living specimens. The first author is funded by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (grant #12002011001-P7). The second author is Fundação de Amparo à Pesquisa do Estado de São Paulo (grants # 2011/51532-7 and 2013/20936-0).

Publisher Copyright:
Copyright © 2019 Magnolia Press.

Keywords

Hemigrammus lunatus
Hemigrammus lunatus species-group
Hemigrammus machadoi
Río Madre de Dios
Río Mamoré

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10.11646/zootaxa.4577.2.6

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title = "Description of a new Hemigrammus Gill (Characiformes: Characidae) from the r{\'i}o Madeira basin in Peru and Bolivia",

abstract = "We described herein a new Hemigrammus from the r{\'i}o Madre de Dios and rio Mamor{\'e} basins in southeastern Peru and Bolivia. The new species possess a color pattern similar to those belonging to the Hemigrammus lunatus species-group, i.e., a broad longitudinal dark stripe across the eye and a conspicuous, narrow dark stripe along the anal-fin basis. It can be easily diagnosed from the species belonging to this group by presenting the combination of the following characters: an oval, horizontally elongated humeral blotch, 6-7 upper branch and 10-12 lower branch gill-rakers, up to five cusps on broader maxillary teeth, and by lacking a midlateral dark stripe. Comments on its putative relationships are provided. Additionally, we updated the geographical distribution of Hemigrammus lunatus and H. machadoi based on an exhaustive survey of material deposited in collections. [Species Zoobank registration: urn:lsid:zoobank.org:act:A2ED5D61-8434- 4A0F-BC5B-B496FB3DC191].",

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author = "Ota, {Rafaela P.} and Lima, {Fl{\'a}vio C.T.} and Hidalgo, {Max H.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 Magnolia Press.",

year = "2019",

doi = "10.11646/zootaxa.4577.2.6",

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volume = "4577",

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AU - Lima, Flávio C.T.

AU - Hidalgo, Max H.

PY - 2019

Y1 - 2019

N2 - We described herein a new Hemigrammus from the río Madre de Dios and rio Mamoré basins in southeastern Peru and Bolivia. The new species possess a color pattern similar to those belonging to the Hemigrammus lunatus species-group, i.e., a broad longitudinal dark stripe across the eye and a conspicuous, narrow dark stripe along the anal-fin basis. It can be easily diagnosed from the species belonging to this group by presenting the combination of the following characters: an oval, horizontally elongated humeral blotch, 6-7 upper branch and 10-12 lower branch gill-rakers, up to five cusps on broader maxillary teeth, and by lacking a midlateral dark stripe. Comments on its putative relationships are provided. Additionally, we updated the geographical distribution of Hemigrammus lunatus and H. machadoi based on an exhaustive survey of material deposited in collections. [Species Zoobank registration: urn:lsid:zoobank.org:act:A2ED5D61-8434- 4A0F-BC5B-B496FB3DC191].

AB - We described herein a new Hemigrammus from the río Madre de Dios and rio Mamoré basins in southeastern Peru and Bolivia. The new species possess a color pattern similar to those belonging to the Hemigrammus lunatus species-group, i.e., a broad longitudinal dark stripe across the eye and a conspicuous, narrow dark stripe along the anal-fin basis. It can be easily diagnosed from the species belonging to this group by presenting the combination of the following characters: an oval, horizontally elongated humeral blotch, 6-7 upper branch and 10-12 lower branch gill-rakers, up to five cusps on broader maxillary teeth, and by lacking a midlateral dark stripe. Comments on its putative relationships are provided. Additionally, we updated the geographical distribution of Hemigrammus lunatus and H. machadoi based on an exhaustive survey of material deposited in collections. [Species Zoobank registration: urn:lsid:zoobank.org:act:A2ED5D61-8434- 4A0F-BC5B-B496FB3DC191].

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Description of a new Hemigrammus Gill (Characiformes: Characidae) from the río Madeira basin in Peru and Bolivia

Abstract

Bibliographical note

Keywords

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