Two new species of non-marine Ostracoda (Crustacea) of the genera Vestalenula Rossetti & Martens, 1998 (Darwinuloidea) and Microloxoconcha Hartmann, 1954 (Cytheroidea) from Tsushima, Japan, and a summary of the non-marine ostracod fauna of the island
Two new species of non-marine Ostracoda (Crustacea) of the genera Vestalenula Rossetti & Martens, 1998 (Darwinuloidea) and Microloxoconcha Hartmann, 1954 (Cytheroidea) from Tsushima, Japan, and a summary of the non-marine ostracod fauna of the island
复制标题
Vestalenula Rossetti 属两个非海洋介形类（甲壳纲）新种
DOI：
10.11646/zootaxa.5150.4.4
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发表时间：
2022
期刊：
影响因子：
0.9
通讯作者：
Cheon Young Chang
中科院分区：
文献类型：
--
作者：
Robin James Smith;Cheon Young Chang
对马群岛位于日本海（东海）南端的朝鲜海峡，与韩国和日本的距离几乎相等。它的非海洋介形动物群以前是未知的，尽管考虑到它的位置，潜在的（古）动物地理兴趣。2019年8月/ 9月和11月/ 12月对岛上淡水和咸淡水栖息地的初步调查显示，共有5科和3超科31种。有两个物种被描述为新物种。Vestalenula gravata是Darwinulidae家族的一个小型代表，其特征是右瓣上有很长的龙骨和没有着色的眼睛。这一物种发现于森林中基材分选差的极浅溪流中。半圆形微孔虫属（Microloxoconcha semicircularis sp. nov.）是一种间质囊状总科，首次在这类生境中发现。另外两个未被描述的物种被描绘出来，但由于个体数量不足而留在开放的命名法中：Vestalenula sp.和Cobanocythere sp.。Vestalenula sp.的触角和天线与来自巴西的三个物种最相似。
The archipelago of Tsushima is located in the Korea Strait, at the southern end of the Sea of Japan (East Sea), and lies almost equidistant from Korea and Japan. Its non-marine ostracod fauna was previously unknown, although potentially of (palaeo-) zoogeographical interest considering its position. Preliminary surveys of freshwater and brackish habitats on the island in August/September and November/December 2019, revealed a total of 31 species in five families and three superfamilies. Two species are described as new. Vestalenula gravata sp. nov. is a small representative of the family Darwinulidae, characterized by a very long keel on the right valve and the absence of a pigmented eye. This species was found in very shallow streams with poorly sorted substrates in forests. Microloxoconcha semicircularis sp. nov., an interstitial Cytheroidea, was recovered from the tidal part of a small river, the first time this genus has been found in this type of habitat. Two other undescribed species are figured, but left in open nomenclature due to insufficient number of individuals: Vestalenula sp. and Cobanocythere sp. The antennule and antenna of Vestalenula sp. are most similar to those of three species from Brazil.