Kołaczyński Andrzej
Museum and Institute of Zoology Polish Academy of Sciences, Wilcza 64, 00-679 Warszawa, Poland.
Zookeys. 2015 Sep 23(522):141-52. doi: 10.3897/zookeys.522.5989. eCollection 2015.
A new species of Metacyclops is described from hyporheic waters and small rock depression with leaf litter in North Vietnam, the Tam Đao Mountains). Metacyclops amicitiae sp. n. can be distinguished from its congeners by the unique combination of the following characters: 12-segmented antennule, distal segment of P4 endopodite bearing a single apical spine, and the surface ornamentation of the intercoxal sclerites in P1-P4 (pilose on the distal margin of P1-P4 and spinulose on the caudal surface of P4). The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki). The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam. An identification key is provided to the south and east Asian species of the genus.
在越南北部的塔姆道山的潜流带水域和有落叶的小岩石凹陷处发现了一种新的独眼水蚤属物种。友谊独眼水蚤新种（Metacyclops amicitiae sp. n.）可通过以下独特特征组合与同属其他物种区分开来：触角分12节，P4内肢远端节有一根单一顶端刺，以及P1 - P4基节间骨片的表面纹饰（P1 - P4远端边缘有柔毛，P4尾面有小刺）。后一特征将这种新的独眼水蚤与其最亲近的亲属琉球独眼水蚤（仅在琉球群岛的石垣岛发现）区分开来。本文描述的包含新物种的独眼水蚤属也是首次在越南被记录。还提供了该属在南亚和东亚物种的鉴定检索表。
