Description of a new uniformly brown estuarine moray eel (Anguilliformes, Muraenidae) from the Central Indo-Pacific Ocean

By

Huang, Wen-Chien
Hibino, Yusuke
Balisco, Rodulf Anthony
Liao, Teyu

Type

Article

Date of Publication

2024

Original Publication

ZooKeys

Volume

1220

Pages

15--34

Subjects

DNA barcoding , mangroves , unicolor snake moray , Uropterygiinae , Uropterygius mactanensis

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1220.129685

 

Abstract

A new estuarine moray eel, Uropterygius hadessp. nov., is described based on 14 specimens from Japan, Taiwan, the Philippines, southern Indonesia, and Fiji. It is a small-bodied, slender, uniformly dark-brown moray separated from congeners within the U. concolor species complex. The new species can be distinguished from congeners by the anteriorly positioned small eyes (5.0–7.2% of head length), absence of branchial pores, and extended inner rows of teeth which reach the posterior end of the jaws. Uropterygius hadessp. nov. represents a rare species of moray eel that inhabits turbid estuarine environments, preferring soft, muddy substrates, and burrowing and hiding among rocks or in fallen mangrove leaves. Additionally, Uropterygius mactanensis Huang, Balisco, Evacitas & Liao, another species recently separated from the U. concolor species complex, is reported for the first time from Iriomote Island in the Ryukyu Archipelago based on two specimens; this new record expands the geographic range of U. mactanensis from the central Philippines to southern Japan.