Review of the Internal Larval Anatomy of the Proceratophrys bigibbosa Species Group (Anura: Odontophrynidae), with Description of the Tadpole of P. brauni Kwet and Faivovich, 2001

ARAUJO-VIEIRA, KATYUSCIA; SANTOS, RAQUEL F.; DIAS, PEDRO H. S.; BOTH, CAMILA

COPEIA

AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS

Año: 2019 vol. 107 p. 417 - 429

0045-8511

The systematic importance of larval characters of the Neotropical genus Proceratophrys has been demonstrated. We reviewthe internal anatomy of the tadpoles of themonophyletic P. bigibbosa species group, provide the first description of larvalmusculature and new data on the chondrocranial morphology, and describe the external morphology andbuccopharyngeal anatomy of the tadpole of P. brauni. Our results support four larval synapomorphies for the P. bigibbosaspecies group (i.e., conical vent tube, dorsal fin originating in the body-tail junction, large gap on the second upper toothrow, and trapezoid median ridge on the buccal roof). The presence of a chondrified commissura quadrato-orbitalis, theprocessus pseudopterygoideus, and an enlarged element on the posterior margin of the hypobranchial plate near theattachment of ceratobranchial IV could be putative synapomorphies for Odontophrynidae.