Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011

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: 26

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-FFD0-5949-FF5C-B9D435E64292

treatment provided by

Plazi

scientific name

Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011
status

 

Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011 

Fig. 7View FIGURE 7

Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011: 49  –56 (original description; type locality: Igarapé Iratapuru, Rio Jari, Laranjal do Jari, Amapá, Brazil); Silva & Benine, 2011: 50 –51 (diagnosis); Silva et al., 2013: 1613 –1631 (diagnosis); Araujo & Lucinda, 2014: 309 –315 (diagnosis); Melo et al., 2016: 707 –717 (molecular phylogeny).

Diagnosis. Tetragonopterus carvalhoi  is distinguished from congeners by the presence of a lozenge-shaped dark mark on caudal peduncle (vs. a rounded dark mark on caudal peduncle). Tetragonopterus carvalhoi  is further distinguished from T. anostomus  , T. denticulatus  , T. juruena  and T. kuluene  by the presence of 4 principal teeth in dentary (vs. 5–6) and larger and more robust teeth (vs. thinner and sharper teeth). In addition, T. carvalhoi  differs from T. anostomus  and T. araguaiensis  by the presence of 12–14 gill-rakers on lower limb of the first gill arch (vs. 16–20). Tetragonopterus carvalhoi  differs from T. rarus  by not having dark longitudinal stripes on the trunk (vs. presence of such stripes) and by having 3.5 scale rows between lateral line and pelvic-fin origin (vs. 4.5–5.5). Tetragonopterus carvalhoi  differs from T. anostomus  by having terminal mouth (vs. subsuperior mouth), and from T. argenteus  by having 7–8 predorsal scales (vs. 11–17). It differs from T. franciscoensis  by the presence of 19–22 olfactory lamellae (vs. 11–17). Tetragonopterus carvalhoi  differs from T. denticulatus  by having humeral marks separated by only one vertical scale row (vs. humeral marks separated by three vertical scale rows). Finally, T. carvalhoi  differs from T. ommatus  by having 2–4 teeth on the maxilla (vs. 7–8) and by having the dark mark centered on the caudal peduncle (vs. dark mark limited to the posterior portion of caudal peduncle).

Description. A detailed description of Tetragonopterus carvalhoi  was recently provided by Melo et al. (2011).

Distribution. Tetragonopterus carvalhoi  is apparently endemic from the Rio Jari, Amazon basin, at the Amapá- Pará boundary, northern Brazil ( Fig. 2 b).

Remarks. Tetragonopterus carvalhoi  is very similar to Astyanax leopoldi Géry, Planquette and Le Bail (1988)  , a species from the Approuague and Oyapock rivers in French Guyana, sharing a overall general appearance and color pattern, including the distinct lozenge-shaped patch of pigmentation on the caudal peduncle. In the original description, Géry et al. (1988) provided an illustration of the infraorbital bones (their figure 6), which clearly shows the presence of a branched laterosensory canal in the sixth infraorbital, a recognized synapomorphy for Tetragonopterus  ( Mirande, 2010; Melo et al., 2011). Mirande (2010: 503), however, noted that the autapomorphy “laterosensory canal of the sixth infraorbital branched (his character 76) for T. argenteus  is homoplastically present in other characids such as Markiana nigripinnis  , Odontostilbe microcephala  and Oligosarcus cf. jenynsii  . Furthermore, paratypes of A. leopoldi  ( MHNGAbout MHNG 2393.098) bear four supraneurals, whereas Tetragonopterus  has only three. Thus, we are convinced that A. leopoldi  and T. carvalhoi  are distinct taxa and that A. leopoldi  should not be considered as a member of Tetragonopterus  .

Material examined. Types: Brazil: MZUSPAbout MZUSP 102268View Materials, holotype, 36.5 mm SL, Amapá, Laranjal do Jari , Rio Jari , Igarapé Iratapuru , 0°33’30”S 52°34’45”W, M. Carvalho, A. Akama, C. Oliveira & F. MarquesGoogleMaps  , 14 Oct 2007. LBP 5306, 6 paratypes, 36.7–42.4 mm SL, Amapá, Laranjal do Jari, Amazon basin, Rio Jari , Igarapé Iratapuru , 0°34’03”S 52°34’41”W, M. Carvalho et al.GoogleMaps  , 10 Oct 2007. LBP 5376, 16 paratypes, 30.2–42.8 mm SL, Amapá, Laranjal do Jari, Amazon basin, Rio Jari , Igarapé Iratapuru , 0°33’51”S 52°34’45”W, M. Carvalho et al. 14 Oct 2007GoogleMaps  . MZUSPAbout MZUSP 106813, 14 paratypes, 35.8–42.2 mm SL, same data as holotype. Non types: MZUSPAbout MZUSP 101755, 3, 56.1–66.0 mm SL, Amapá, Laranjal do Jari, Amazon basin, Rio Jari , 0°38’55”S 52°30’31”WGoogleMaps  . MZUSPAbout MZUSP 101803, 2, 58.5–63.7 mm SL, Amapá, Laranjal do Jari, Amazon basin, Rio Jari , 0°34’16”S 52°34’44”WGoogleMaps  . MZUSPAbout MZUSP 102267, 10, 40.0– 46.3 mm SL, Amapá, Laranjal do Jari, Amazon basin, Rio Jari , 0°34’03”S 52°34’31”WGoogleMaps  . MZUSPAbout MZUSP 102268, 18, 34.9–54.5 mm SL, same data as holotype.GoogleMaps 

MHNG

Museum d'Histoire Naturelle

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Anthribidae

Genus

Tetragonopterus

Loc

Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011

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

2016
Loc

Tetragonopterus carvalhoi

Melo 2016: 707
Araujo 2014: 309
Silva 2013: 1613Melo 2011: 49
Silva 2011: 50

2011