title: Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina.
abstract: Oligosarcus amome is described from tributaries of the arroyo Yabotí-Guazú, río Uruguay basin, Misiones Province, Argentina. This new species can be distinguished from all its congeners by the following combination of characters: presence of two conspicuous series of teeth on premaxilla bearing pentacuspidate teeth in the outer series. Oligosarcus amome is the sister taxon of all remaining analyzed species of the genus excepting O. itau.
authors: UNLP, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, Paseo del Bosque, 1900 La Plata, Bs. As., Argentina.; Email: aalmiron@fcnym.unlp.edu.ar.
authors: Adriana
authors: A
authors: Almirón
authors: UNLP, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, Paseo del Bosque, 1900 La Plata, Bs. As., Argentina. CIC, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, 1900 La Plata, Argentina; Email: jrcas@fcnym.unlp.edu.ar.
authors: Jorge
authors: J
authors: Casciotta
authors: University of South Bohemia, Faculty of Science, Department of Zoology, Branišovská 31, 370 05, České Budějovice, Czech Republic.; Email: lpialek@yahoo.com.
authors: Lubomír
authors: L
authors: Piálek
authors: University of South Bohemia, Faculty of Science, Department of Zoology, Branišovská 31, 370 05, České Budějovice, Czech Republic.; Email: klara.doubnerova@gmail.com.
authors: Klára
authors: K
authors: Doubnerová
authors: University of South Bohemia, Faculty of Science, Department of Zoology, Branišovská 31, 370 05, České Budějovice, Czech Republic.; Email: oldrichrican@yahoo.com.
authors: Oldřich
authors: O
authors: Říčan
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001118:Argentina; D049628:Body Size; D060126:Characidae / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D009929:Organ Size; D010802:Phylogeny