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首页> 外文期刊>Zootaxa >Discovery of living Potamolepidae (Porifera: Spongillina) from Nearctic freshwater with description of a new genus
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Discovery of living Potamolepidae (Porifera: Spongillina) from Nearctic freshwater with description of a new genus

机译：从Nearctic淡水中发现活的波塔菌科（Porifera：Spongillina），并描述了一个新属

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摘要

We report here the first record of a living Potamolepidae (Cherokeesia n. gen.) from the Nearctic Region and from the northern hemisphere. The new species Cherokeesia armata from southern Appalachians diverges at generic and specific level from all the other known taxa of the family Potamolepidae in its unique combination of diagnostic traits: gemmular theca armed by gemmuloscleres ranging from small strongyle-like spicules to stout, large oxeas; absence of pneumatic layer; spiny oxeas as main skeleton megascleres; irregular, slender pauci- to uni-spicular skeletal network. The most similar species belong to the genera Potamophloios and Oncosclera. The circumtropical biogeographic pattern of extant Potamolepidae, previously considered of Gondwanian to Gondwanian-like origin, is enlarged to the Nearctic. The present Tennessee discovery confirms a wider range of the family. An updated species inventory of Nearctic Spongillina, a checklist of the family Potamolepidae at the global level together with a key to the genera of Potamolepidae are also provided.
机译：我们在这里报告了来自北冰洋地区和北半球的活波莫科（Cherokeesia n。gen。）的第一个记录。来自阿巴拉契亚南部的新切诺基（Cherokeesia armata）物种在其独特的诊断特征组合中，与波塔莫科（Potamolepidae）家族的所有其他已知分类群在通用和特定水平上有所不同：由小核样针状针尖到粗壮的大牛角类的小分子武装的小叶鞘;没有气动层;多刺的毛刺为主要的骨骼巨核;不规则的，细长的从头到头的骨骼网络。最相似的物种属于Potamophloios和Oncosclera属。现存的波塔莫科的环向生物地理格局，以前被认为是冈瓦尼人到类似冈瓦尼人的起源，后来被扩大到了近地生物。田纳西州目前的发现证实了这个家庭的广泛分布。还提供了近海海绵体的最新物种清单，全球范围内波莫科的清单以及波莫科的关键。

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