Tornabene Luke, Greenfield David W, Erdmann Mark V
School of Aquatic and Fishery Sciences, and the Burke Museum of Natural History and Culture, University of Washington, 1122 NE Boat Street, Seattle, Washington, 98105, USA.
Research Associate, Department of Ichthyology, California Academy of Sciences, 55 Music Concourse Dr., Golden Gate Park, San Francisco, California 94118-4503, USA.
Zookeys. 2021 Aug 27;1057:149-184. doi: 10.3897/zookeys.1057.66675. eCollection 2021.
The complex includes eight species of closely-related dwarfgobies, four of which are herein described as new. The complex is named for Lachner & Karnella, 1978, an Indian Ocean species with the holotype from the Seychelles Islands and also known from the Maldives, which was once thought to range into the Gulf of Aqaba and the Red Sea eastward to the Great Barrier Reef of Australia. Our analysis supports the recognition of four genetically distinct, geographically non-overlapping, species within what was previously called , with being restricted to the Indian Ocean, described from the Red Sea, described from western New Guinea, and described from Fiji. The caudal fin of all four of these species is crossed by oblique black bars in preservative, but these black bars are absent from the four other species included in the complex. Two of the other species within the complex, and are morphologically similar to each other in having the AITO cephalic-sensory pore positioned far forward and opening anteriorly. is known from lagoonal environments in Cenderawasih Bay and Raja Ampat, West Papua, and is known only from deeper reefs (35-60 m) from Fakfak Regency, West Papua. The final two species are which is known from Fiji and Tonga and possesses red bars crossing the caudal fin (but lost in preservative) and a 9/8 dorsal/anal-fin formula, and , which is described as new from New Guinea and the Solomon Islands, and possesses an 8/7 dorsal/anal-fin formula and lacks red caudal bars. has been confused with in the past.
该复合体包括八种亲缘关系密切的侏儒虾虎鱼，其中四种在此被描述为新物种。该复合体以1978年的拉克纳虾虎鱼和卡内拉虾虎鱼命名，这是一种来自印度洋的物种，其模式标本采自塞舌尔群岛，马尔代夫也有记录，曾被认为分布范围延伸至亚喀巴湾和红海，向东至澳大利亚大堡礁。我们的分析支持在以前被称为[某名称]的分类单元中识别出四个遗传上不同、地理分布不重叠的物种，[物种1]仅限于印度洋，[物种2]描述于红海，[物种3]描述于新几内亚西部，[物种4]描述于斐济。这四个物种的尾鳍在保存标本中都有斜向的黑色条纹，但该复合体中的其他四个物种没有这些黑色条纹。该复合体中的另外两个物种，[物种5]和[物种6]，在形态上彼此相似，其AITO头部感觉孔位置靠前且向前开口。[物种5]见于西巴布亚省的森达瓦西湾和拉贾安帕特的泻湖环境，[物种6]仅见于西巴布亚省法克法克摄政区较深的珊瑚礁（35 - 60米）。最后两个物种是[物种7]，见于斐济和汤加，其尾鳍有红色条纹（但在保存标本中消失），背鳍/臀鳍公式为9/8，以及[物种8]，它是从新几内亚和所罗门群岛描述的新物种，背鳍/臀鳍公式为8/7，且没有红色尾鳍条纹。[物种8]过去曾与[物种7]混淆。
