A needle in a haystack: Integrative taxonomy reveals the existence of a new small species of fossorial frog (Anura, Microhylidae, Synapturanus) from the vast lower Putumayo basin, Peru

By

Chávez, Germán
Thompson, Michelle E
Sánchez, David A.
Chávez-Arribasplata, Juan Carlos
Catenazzi, Alessandro

Type

Article

Date of Publication

2022-2-16

Original Publication

Evolutionary systematics

Volume

6

Series / Issue

Issue: 1

Pages

9--20

Subjects

Acoustic , genetic , Loreto , Morphology , peatland

Contributed by

Pensoft Publishers

Language

English

Published by

Hamburg Centrum für Naturkunde (CeNak) 2017-

Identifiers

DOI: https://doi.org/10.3897/evolsyst.6.80281

 

Abstract

We describe a new species of microhylid frog of the genus Synapturanus from the lower Putumayo basin in Loreto, Perú. Specimens inhabited the soils of stunted pole forests growing on peat. The new species is distinguished from other species of Synapturanus through morphology, genetics, and acoustic characteristics. This species differs from most nominal congeners by having a head flat in lateral view (vs convex in the rest of species), a characteristic only shared by S. rabus and S. salseri. The new species can be distinguished from S. rabus and S. salseri by a combination of morphological characters and by having an advertisement call with a note length of 0.05–0.06 seconds (vs 0.03 seconds in S. rabus) and a dominant frequency ranging from 1.73 to 1.81 kHz (vs 1.10–1.47 kHz in S. salseri). Principal component analyses of 12 morphological characters and three acoustic variables further support differences between the new species and its described and undescribed congeners.