title: A new species of Amaralia Fowler (Siluriformes: Aspredinidae) from the Paraná-Paraguay River Basin.
abstract: A new species of the banjo catfish genus Amaralia is described from the Paraná-Paraguay River Basin in central-western Brazil, Paraguay and northern Argentina. Amaralia oviraptor is distinguished from its single and allopatric congener, Amaralia hypsiura, by the greater number of dorsal-fin rays (3 vs. 2); by the absence of lateral contact between middle and posterior nuchal plates (vs. middle and posterior nuchal plates contacting each other laterally); and by a longer cleithral process (17.4-19.5 % of SL, mean 18.2 % vs. 14.0-17.2 % of SL, mean=15.5 %). Comments on the peculiar oophagic diet of Amaralia and an extended diagnosis of the genus are provided.
authors.affiliation: Alabama Museum of Natural History, The University of Alabama, Box 870340, Tuscaloosa, AL, 35487-0340 USA.; Email: jpfriel@ua.edu.
authors.forename: John P
authors.initials: JP
authors.lastname: Friel
authors.affiliation: Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103-1195 USA. Laborátorio de Ictiologia, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul. Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre RS, Brazil.; Email: carvalho.ictio@gmail.com.
authors.forename: Tiago P
authors.initials: TP
authors.lastname: Carvalho
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001118:Argentina; D049628:Body Size; D001938:Brazil; D002397:Catfishes / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D005260:Female; D008297:Male; D009929:Organ Size; D010239:Paraguay; D045483:Rivers