The long lasting misidentification of the tetraploid frogs of the genus Odontophrynus (Anura: Odontophrynidae).

ROSSET, SERGIO; BALDO, DIEGO; BORTEIRO, CLAUDIO; KOLENC, FRANCISCO; CAZZANIGA, NESTOR; BASSO, NESTOR GABRIEL

HERPETOLOGICAL MONOGRAPHS

HERPETOLOGISTS LEAGUE

Lugar: Lawrence; Año: 2022 vol. 36 p. 80 - 98

0733-1347

The holotype of Odontophrynus americanus collected by Alcide d?Orbignyin northern Patagonia, Argentina, differs morphologically from the tetraploid frogsrepeatedly assigned to this species and that are distributed from central Argentina andUruguay to the north to Brazil and Paraguay (probably also Bolivia). Surprisingly, theexternal characteristics of the holotype match with the morphology of the adult syntypeand specimens currently referred to as Odontophrynus occidentalis , distributed incentral, western and southern Argentina. Based on resemblance in position, number,size and shape of the glandular warts, we propose that O . americanus should beconsidered a senior synonym of O . occidentalis . Consequently, we realize that thetetraploid frogs currently called O . americanus were all too often misidentified underthis name. After reviewing all the available names applicable to this tetraploid species,we recognize Hyperoodon asper described by Rodolfo A. Philippi as valid,resurrecting this nominal species within the genus Odontophrynus , with thedesignation of a neotype from Montevideo, Uruguay. We also propose thatCeratophrys argentina Philippi is a nomen dubium. To update the taxonomy of thegenus Odontophrynus , we provide partial chresonymies, morphological diagnoses,cytogenetic and bioacoustic characters, and geographic distribution maps for both O .americanus and O . asper .