A new species of Xenophrys (Amphibia, Anura, Megophryidae) from southern Tibet, China

By

Shu, Guocheng
Li, Ke
Wu, Yayong
Liu, Qin
He, Zhongping
Li, Ling
Zhang, He
Guo, Peng

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1182

Pages

307--329

Subjects

Morphology , Phylogenetic analyses , taxonomy , Xenophrys pangdaensis sp. nov , Yadong County

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1182.106828

 

Abstract

A new species of Xenophrys is described from Yadong County, Tibet Autonomous Region, China based on morphological and molecular evidence. Phylogenetic analyses based on the mitochondrial genes 16S rRNA and COI indicated that this new species represents an independent lineage and the minimum p-distance based on 16S rRNA between this species and its congeners is 4.4%. Additionally, the new species is distinguished from its congeners by a combination of the following morphological characters: (1) small body size, SVL 17.9–22.2 mm in adult males and SVL 23.4 mm in the single adult female; (2) tympanum indistinct, supratympanic fold distinct; (3) canthus rostralis well-developed, snout tip far beyond the margin of the lower lip; (5) pupil vertical; (6) vomerine teeth present, maxillary teeth present; (7) tongue notched posteriorly; (8) supernumerary tubercles absent, subarticular, metacarpal and metatarsal tubercles indistinct; (9) relative finger lengths I < II < IV < III, finger tips rounded, slightly expanded relative to digit widths; (10) toes with narrow lateral fringes and tarsal folds; (11) a dark triangular marking with light edge between eyes, a dark “)(”-shaped marking, with light edge, present on center of dorsum, pectoral glands on sides of the breast.