Readily distinguished from all congeners in the possession
of the following characters: short lateral line, reaching
only the vertical line through base of dorsal-fin
spine; 3-6 lateral line pores; 3-6 gill rakers in
the first branchial arch; 10-11 branched caudal fin
rays; 5 pleural ribs; 27-28 free vertebrae; large
anterior fontanel; small supraoccipital process not
contacting anterior nuchal plate; small nuchal shield.
Colour: Ground colour light brown.
Ventral region of body and head pale with brown spots.
Head dark brown, with lateral portions of head, margin
of opercle, anterior and posterior nostrils, and pores
of cephalic canals light colored. Wide, irregular
light band passing through nape and anterior portion
of trunk, immediately after opercular opening. Upper
lip dark, lower lip light. Light barbels speckled
with dark brown spots. Remarks: Very
similar to M.
the lateral line is shorter. Small species. Specimens
collected at the Rio Cristalino basin have larger
interorbital width and possess an overall darker colouration
when compared with specimens of the Rio das Mortes
From tributaries of Rio das Mortes and Rio Cristalino,
upper-middle rio Araguaia basin, State of Mato Grosso.
Type Locality: Brazil, Mato Grosso,
Barra do Garças, Vale dos Sonhos District,
BR-158 road, km 750, rio Corrente (right margin tributary
of the rio das Mortes), rio Araguaia basin, 15°29’56.3”S
52°12’10.8”W, 31 Jul 2008.
21 -25°C (69-77°F)
W. B. G. Ruiz &
O. A. Shibatta;
Two new species of Microglanis (Siluriformes: Pseudopimelodidae)
upper-middle rio Araguaia basin, Central Brazil. Neotropical
Ichthyology, 9(4): 697-707, 201. Grant, Steven; Pers comm. Dec. 2011.