首页> 外文期刊>Bulletin of the National Museum of Nature and Science >Ancistrogobius, a New Cheek-spine Goby Genus from the West Pacific and Red Sea, with Descriptions of Four New Species (Perciformes: Gobiidae: Gobiinae)
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Ancistrogobius, a New Cheek-spine Goby Genus from the West Pacific and Red Sea, with Descriptions of Four New Species (Perciformes: Gobiidae: Gobiinae)

机译:来自西太平洋和红海的新颊颊虾虎鱼属Ancistrogobius,带有四个新物种的描述(Performformes:Gobiidae:Gobiinae)

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摘要

A new gobiid fish genus, Ancistrogobius, is described based on 4 new species (A. dipus, A. squamiceps, A. yanoi, and A. yoshigoui) from the western Pacific and Red Sea. Ancistrogobius is unique within the gobiid subfamily Gobiinae in having a short, ventrally directed bony spine-like projection at the posterior margin of the preopercle. Within the genus, A. dipus n. sp. (8 type specimens, 31.6-42.4 mm SL) is unique in having a separated pelvic fin with a rudimentary connecting membrane between the innermost rays and no frenum (vs. pelvic fins united medially with a well-developed connecting membrane and frenum in the other species). Ancistrogobius squamiceps n. sp. (2 type specimens, 29.8-50.5 mm SL) differs from congeners in having scales on most of the nape and 12 predorsal scales (vs. nape almost naked, typically without scales on pre-dorsal midline) and a scale patch on the dorsal part of the operculum (vs. head naked). Of the remaining 2 new species, A. yanoi n. sp. (14 type and 2 non-type specimens, 16.9-36.8 mm SL) is chiefly distinguished from the other, A. yoshigoui n. sp. (14 type specimens, 26.1-40.6 mm SL), in having an elongate and filamentous third spine in the first dorsal fin (vs. no filamentous spines in the latter species). Almost all of the examined specimens of this genus were collected from the western Pacific, exclusive of 2 Red Sea specimens, provisionally identified as A. yanoi. Ancistrogobius is a bottom-dwelling goby genus, found on sandy or sandy-mud bottoms with dead-coral rubble in protected bays (0-50 m depths), and is not commensal with other marine organisms.
机译:基于来自西太平洋和红海的4个新物种(A. dipus,A。quamiceps,A。yanoi和A. yoshigoui)描述了一种新的戈壁鱼属Ancistrogobius。 Ancistrogobius在gobiid亚科Gobiinae中是独特的,在前oper后缘有一个短的,腹侧指向的骨脊柱状突起。在属中,A。dipus n。 sp。 (8种标本,SL为31.6-42.4 mm)的独特之处在于其骨盆鳍片分开,最里层射线之间有一个基本的连接膜,而没有束带(相对于骨盆鳍片在内侧结合了一个发达的连接膜和束带)种类)。拟南芥sp。 (2个类型的标本,SL为29.8-50.5 mm)与同类动物的不同之处在于,其大部分颈背上有鳞片和12个背前鳞片(相对于颈背几乎是裸露的,通常在背前中线上没有鳞片),并且在背侧部分有鳞片the盖(相对于头部裸露)。在其余的2个新物种中,A。yanoi n。 sp。 (14个标本和2个非标本标本,SL为16.9-36.8 mm)与其他标本A. yoshigoui n。的主要区别。 sp。 (14型标本,SL。26.1-40.6 mm),在第一背鳍中有细长的丝状第三脊柱(后一种则没有丝状棘)。该属的几乎所有受检标本都是从西太平洋收集的,不包括2个暂定为yanoi的红海标本。 Ancistrogobius是一种底栖虾虎鱼属,在受保护海湾(0-50 m深度)的带有死珊瑚瓦砾的沙质或沙质泥质底部发现,与其他海洋生物不相称。

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