A new genus and two new species of miniature clingfishes from temperate southern Australia (Teleostei, Gobiesocidae)
A new genus and two new species of miniature clingfishes from temperate southern Australia (Teleostei, Gobiesocidae)
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DOI：
10.3897/zookeys.864.34521
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发表时间：
2019-07-15
期刊：
影响因子：
1.3
通讯作者：
Summers, Adam P.
中科院分区：
文献类型：
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作者：
Conway, Kevin W.;Moore, Glenn, I;Summers, Adam P.
根据从澳大利亚南部海岸潮间带和浅潮下带地区密集的大型藻类采集的标本，描述了微型粘鱼的一个新属和两个新种。新属 Barryichthys 与 Gobiesocidae 的其他属的区别在于粘着盘的独特特征，包括粘着盘区域 A 和 B 中的细长乳突，头侧线管、下鳃弓骨架和神经颅的几个部分的减少和/或损失，以及具有两种不同类型的胸鳍条。 Barryichthys huchinsi 的描述基于来自西澳大利亚和南澳大利亚的 19 个标本（12.4-18.7 毫米 SL）。 Barryichthys algicola 根据来自维多利亚州、新南威尔士州和塔斯马尼亚州的 22 个标本 (9.0-21.0 mm SL) 进行了描述。这些新物种的区别在于身体和头部形状、椎骨数量以及活色图案等方面的特征。这个新属与Parvicrepis有几个共同特征，Parvicrepis是来自澳大利亚南部的另一种微型虾虎鱼属，也栖息在大型藻类栖息地。巴里鱼的许多简化和新颖特征在小型化的背景下进行了讨论。
A new genus and two new species of miniature clingfishes are described based on specimens collected from dense stands of macroalgae in intertidal and shallow subtidal areas along the coast of southern Australia. The new genus, Barryichthys, is distinguished from other genera of the Gobiesocidae by unique features of the adhesive disc, including elongate papillae in adhesive disc regions A and B, the reduction and/or loss of several elements of the cephalic lateral line canals, the lower gill arch skeleton, and the neurocranium, and by having two distinct types of pectoral-fin rays. Barryichthys hutchinsi is described based on 19 specimens (12.4-18.7 mm SL) from Western Australia and South Australia. Barryichthys algicola is described based on 22 specimens (9.0-21.0 mm SL) from Victoria, New South Wales and Tasmania. The new species are distinguished from each other by characters of body and head shape, vertebral counts, and aspects of live colour pattern. The new genus shares several characters in common with Parvicrepis, another genus of miniature gobiesocids from southern Australia that also inhabits macroalgae habitats. The many reductions and novel characters of Barryichthys are discussed within the context of miniaturisation.