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	https://doi.org/ 10.11646/zootaxa.1822.1.1
persistent identifier	https://treatment.plazi.org/id/2E3287FB-1054-FFB8-D99E-FF6AEA15EFCD
treatment provided by	Felipe
scientific name	Peckoltia braueri
status

Treatment

Peckoltia braueri View in CoL

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

Hemiancistrus braueri Eigenmann, 1912 b: 232 View in CoL , 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, 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, 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, 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, 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, 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, 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, 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.