Peckoltia braueri

Armbruster, Jonathan W., 2008, The genus Peckoltia with the description of two new species and a reanalysis of the phylogeny of the genera of the Hypostominae (Siluriformes: Loricariidae), Zootaxa 1822 (1), pp. 1-76: 14-15

publication ID

http://doi.org/ 10.11646/zootaxa.1822.1.1

persistent identifier

http://treatment.plazi.org/id/2E3287FB-1054-FFB8-D99E-FF6AEA15EFCD

treatment provided by

Felipe

scientific name

Peckoltia braueri
status

 

Peckoltia braueri  

( Figs. 2b View FIGURE 2 and 6–7 View FIGURE 6 View FIGURE 7 )

Hemiancistrus braueri Eigenmann, 1912 b: 232   , pl. 28 (fig. 1). Type locality: Takutu , British Guiana. Holotype: ZMB 3174 View Materials (larger specimen).

Material Examined: GUYANA, Region 9 (Upper Takutu – Upper Essequibo), Takutu River - Negro River drainage: ANSP 180206, 12, 44.8–91.7 mm SL and AUM 36228 View Materials , 20, 4 cs, 44.7–96.5, Takutu River ca. 2.75 km W Saint Ignatius, 03°21’18”N, 059°49’51”, 5–6 November 2002, J.W. Armbruster, M.H. Sabaj, D.C. Werneke, C.L. Allison, M. R. Thomas, C.J. Chin, D. Arjoon, and L. Atkinson; ANSP 180207, 2, 39.8–50.6 and AUM 35525 View Materials , 3, 84.1–66.0, Pirara River, tributary of the Ireng River, 3.5 km NNW Pirara, 03°38’55”N, 059°41’20”, 2 November 2002, J.W. Armbruster, M.H. Sabaj, M. R. Thomas, D.C. Werneke, and D. Arjoon; ANSP 180208, 1, 93.5 and AUM 38882 View Materials , 2, 77.7–103.0, same locality as ANSP 180206, 1 November 2003, J.W. Armbruster, M.H. Sabaj, M. Hardman, D. Arjoon, N.K. Lujan, and L.S. de Souza; and AUM 37914 View Materials , 1, not measured, Takutu River at Saint Ignatius, 1.86 km NNE Lethem, 03°21’20”N, 059°48’19”, 2 November 2003, J.W. Armbruster, M.H. Sabaj, M. Hardman, D. Arjoon, N.K. Lujan, and L.S. de Souza; AUM 44593 View Materials , Ireng River at Sunnyside, 03°44’37”N., 059°40’11”W, L.S. de Souza, N.K. Lujan, D.C. Taphorn, J.A. Hartsell, E. Liverpool, and S. Lord, 26 November 2005; AUM 44673 View Materials , Pirara River at Pirara Ranch, 03°37’31”N, 059°40’37”W, L.S. de Souza, N.K. Lujan, D.C. Taphorn, J.A. Hartsell, E. Liverpool, and S. Lord, 26 November 2005; AUM 44710 View Materials , Takutu River near Lethem, 03°28’14”N, 059°48’36”W, L.S. de Souza, N.K. Lujan, D.C. Taphorn, J.A. Hartsell, E. Liverpool, and S. Lord, 27 November 2005.

BRAZIL, Roraima, Rio Negro drainage   : MZUSP 33703 View Materials , 1 View Materials , 83.6 View Materials , and   MZUSP 34652 View Materials , 1 View Materials , 62.0, Rio Branco, Bem Querer rapids, 8 January 1984, M. Goulding   ; MZUSP 34563 View Materials , 5 View Materials , 74.7 View Materials 82.4 View Materials . Igarapé do Cujobim, in front of Ilha de Maracá , 13 January 1984, M. Goulding   .

Diagnosis: Peckoltia braueri   can be identified from all other described Peckoltia   except P. cavatica   by the presence of an orange band at the edge of the dorsal and caudal fins and by having thin, wavy, black lines that tend to outline the plates and bones of the head ( Figs. 2b View FIGURE 2 and 7 View FIGURE 7 ). Peckoltia braueri   can be identified from P. cavatica   by having the dorsal saddles better developed (vs. barely visible), by having the head plates and bones not completely outlined in black and with lines intense (vs. having all of the head plates and bones completely outlined in black and with the lines lighter), by having black vermiculations on the compound pterotic (vs. no vermiculations), by having at least one, broken band in the caudal fin (vs. no bands in the caudal fin), and by having the marginal orange band of the dorsal and caudal fins not as thick or as intense as in P. cavatica   . The only other species of Peckoltia   with wavy lines on the head are P. caenosa   , P. lineola   and P. vermiculata   . Peckoltia braueri   can be identified from P. caenosa   and P. lineola   by having narrow vermiculations on the head (narrower than the pupil vs. about the same width of the pupil) forming a net (vs. several distinct lines and some separate spots), and by having the plates of the nape outlined in black (vs. nape plates not outlined); from P. caenosa   by lacking markings on the abdomen (vs. vermiculations), by having bands in the dorsal (vs. light spots) and by having the dark and light bands on the caudal fin of about equal width (vs. light bands about 25% of width of dark bands); and from P. vermiculata   by having vermiculations that do not radiate from a central point on the parieto-supraoccipital (vs. vermiculations mostly combined to the parietosupraoccipital and radiating from a central point), and by having the nape plates outlined with black (vs. nape plates not outlined).

Description: Peckoltia brueri   was recently redescribed by Armbruster and Werneke (2005). Morphometrics in Table 1.

Range: Collected from three localities around Lethem in the Takutu and Pirara Rivers ( Fig. 8 View FIGURE 8 ). Found in swift riffles among very large boulders. Also known from the mainstem Rio Branco near Caracarai and the Rio Uraricoera drainage of Brazil.

ANSP

Academy of Natural Sciences of Philadelphia

AUM

Auburn University Museum of Natural History

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Siluriformes

Family

Loricariidae

Genus

Peckoltia

Loc

Peckoltia braueri

Armbruster, Jonathan W. 2008
2008
Loc

Hemiancistrus braueri

Eigenmann 1912: 232
1912