Microdous amblyrhynchos sp. nov., a new member of the small-toothed sleepers (Teleostei, Gobiiformes, Odontobutidae) from Guangxi, southern China

By

Hu, Jiantao
Lan, Chun
Li, Chenhong

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1153

Pages

1--13

Subjects

Freshwater sleepers , Morphology , Phylogeny , taxonomy , Xijiang River

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1153.97139

 

Abstract

Microdous amblyrhynchos, a new species, the second one in the genus, from the family Odontobutidae, is described from the Hongshui River, in the upper reaches of the Xijiang River of the Pearl River drainage, Baise City, Guangxi Zhuang Autonomous Region, southern China. This species is distinguished from its only congener, M. chalmersi, by the blunt snout (vs. pointed); mean snout length/head length ratio 0.27 (vs. 0.3); eye not extending outward (vs. protruding); mean interorbital width/head length ratio 0.25 (vs. 0.11). Additionally, the results of molecular phylogenetic analysis confirmed that M. amblyrhynchossp. nov. is distinct from its sister species, M. chalmersi.