There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
A new species of the genus
Megischus Brullé, 1846,
Megischuskuafu Ge & Tan,
sp. nov., is described and illustrated from Guizhou Province, China. The key to all four species
from China is included. A distribution map of the Chinese species is added.
The two only species of Myliobatis Cuvier, that occur in the Brazilian coast, Myliobatis freminvillii Lesueur and Myliobatis goodei Garman, have great similarity in external morphology and possess few diagnostic characters that allow easy identification. In order to discriminate these two species, 34 specimens of M. freminvillii and 19 of M. goodei were measured and twenty morphometric characters were taken from each specimen. The residuals of a previous regression analysis performed on all morphometric variables relative to the disc width were used in the Size Independent Discriminant Analysis. All specimens were correctly allocated to their respective taxa. The analysis showed a clear separation of the specimens, forming two well-defined distinct groups. The fifth interbranchial distance (5ID) was the variable with the highest standardized discriminant coefficient value. The fifth interbranchial distance (5ID)-Internarial distance (IND) and fifth interbranchial distance (5ID)-Mouth width (MW) were the proportions that showed better differentiation between Myliobatis species.
Journal ID (index): urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
Journal ID (aggregator): urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
Title:
ZooKeys
Publisher:
Pensoft Publishers
ISSN
(Print):
1313-2989
ISSN
(Electronic):
1313-2970
Publication date Collection: 2021
Publication date
(Electronic):
08
March
2021
Volume: 1022
Pages: 65-77
Affiliations
[1
]
College of Forestry, Beijing Forestry University, Beijing 100083, China
Beijing Forestry University
Beijing
China
[2
]
Shaanxi Key Laboratory for Animal Conservation / Key Laboratory of Resource Biology
and Biotechnology in Western China, College of Life Sciences, Northwest University,
229 North Taibai Road, Xi’ an, Shaanxi 710069, China
Northwest University
Xian
China
This is an open access article distributed under the terms of the Creative Commons
Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and
reproduction in any medium, provided the original author and source are credited.