Fig 1.
Live specimens of Gymnogeophagus jaryi sp. nov. in left lateral view from type locality.
From Cuña Pirú stream, Paraná River basin, near Aristóbulo del Valle, Misiones Province, Northeastern Argentina (27°5'16.69"S, 54°57'10.60"W). (A) Holotype, male CI-FML 7463, 113.1 mm SL, (B) Paratype, female CI-FML 7464, 73.3 mm SL.
Fig 2.
Preserved specimens of Gymnogeophagus jaryi sp. nov. in left lateral view from type locality.
From Cuña Pirú stream, Paraná River basin, near Aristóbulo del Valle, Misiones Province, Northeastern Argentina (27°5'16.69"S, 54°57'10.60"W). (A) Holotype, male CI-FML 7463, 113.1 mm SL, (B) paratype, female CI-FML 7464, 73.3 mm SL, (C) paratype, male CI-FML 5424, 126.1 mm SL.
Fig 3.
Live specimens of Gymnogephagus jaryi sp. nov. in left lateral view, paratype and non-type adult male specimens.
(A) MLP 11293, paratype, same locality as holotype (Cuña Pirú); (B,C) MLP 11295, paratype (Cuña Pirú); (D,E,F) MLP 11365, non-type (Ñacanguazú); (G) Paraguay, not preserved (Ype Curu); (H) Paraguay, not preserved (Manduviyú). It needs to be considered that these pictures of the alive specimens have been taken at night and out of water using the camera’s flash light iluminating from the latterals of the fish, which have slightly altered the colors seen. Also, holding them in hand while taking the pictures produced a slight translucent redish aspect to the fins.
Table 1.
Frequency distribution of meristic characters.
Fig 4.
Dorsal view of lower pharyngeal tooth plate.
CI-FML 5424. Scale bar = 1 mm.
Table 2.
Morphometrics of Gymnogeophagus jaryi sp. nov.
Fig 5.
Known distribution of Gymnogeophagus jaryi, G. caaguazuensis and G. australis.
Based only on material examined herein. Symbols may represent more than one locality. Image made with Diva-Gis.
Fig 6.
Habitats of Gymnogeophagus jaryi. at Middle Paraná River basin, Misiones, Argentina.
(A, B, C) Type Locality at Cuñá Pirú stream;(B) rocks and driftwood in the margins; (C) rapids with marginal vegetation; D) Ñacanguazú stream. All photos show localities after rains in turbid conditions.
Fig 7.
Phylogenetic relationships of Gymnogeophagus jaryi based on cytb marker.
Analysis by parsimony under extended implied weighting. Numbers above branches denote GC values. Image of G. caaguazuensis and G. constellatus were taken and modified from their original description; [2, 11].