Carlos A. Ardila Rodriguez, 2007
Callichthys oibaensis (Siluriformes: Callichthyidae), una nueva especie de pez, Rio Oibita, sistema Rio Suares, cuenca del Rio Magdalena, Colombia.Abstract
A new species of fish, Callichthys oibaensis sp. nov., is described for the Department of Santander (Colombia), captured near the headwaters of a small affluent of the River Oibita (1450 m of altitude) which is a tributary of the River Suarez, who in turn empties into the Sogamoso River, and finally this into the River Magdalena. This is the first record of Callichthys for the west part of the Eastern Andean Cordillera of Colombia.
The new species differs from others Callichthys, because eits larger number of vertebrae, the interception of the first pterigiofore of the anal fin that occurs in the19th vertebrae in males and in the18th vertebrae in females. The plates of the posterior region of the supraoccipital are bare. The centre part of the first predorsal plate is not united. The hyomandibular bone is morphologically different from C. Fabricioi. The parasphenoid, vomer and mesethmoid are completely different to all the known species of Callichthys. The medially interdigitated suture of the cleithrum with the caracoid has a differents hape of that of C. fabricioi. The pelvic girdle of Callichthys oibaensis has an ischiatic process, a basiptherygium and an internal and external process that differs to all the known species. Callichthys oibaensis is the smallest known species of Callichthyinae.
Carlos A. Ardila Rodríguez
Dahlia (Rev. Asoc. Colomb. Ictiol.) 9: 3-12, 2007