New species of the genus Spectracanthicus (Loricariidae, Hypostominae, Ancistrini) from the Rio Javaés (Rio Araguaia basin), with a description of gross brain morphology
C. C. Chamon, T. N. A. Pereira, M. B. Mendonça und A. Akama
Abstract
A new species of
Spectracanthicus is described from the Rio Javaés, Rio Araguaia basin. The new species is distinguished from its congeners (except
Spectracanthicus immaculatus) by colour pattern:
body dark grey to dark brown without dots or blotches (v. body colour with yellowish small dots in
Spectracanthicus murinus,
Spectracanthicus punctatissimus and
Spectracanthicus tocantinensis and large white dots in
Spectracanthicus zuanoni). It can be further distinguished from
S. immaculatus by having thicker and less numerous teeth, with up to eight premaxillary and 20 dentary teeth (v. teeth thinner and more numerous with up to 22 premaxillary and 30 dentary teeth); dorsal and caudal fins without curved spines (v. dorsal and caudal fins with curved spines). Other osteological characters can also diagnose the new species from its congeners. In addition, a gross brain description and brief comments on the new species’ ecological habitat are given.
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Die neue Art heisst
Spectracanthicus javae.
Gruß,
Karsten