1936年朗属的一个新物种（桡足亚纲，猛水蚤目，克莱猛水蚤科）来自韩国。
A new species of the genus Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea.
作者信息
Cho Kyuhee, Kim Jong Guk, Lee Jimin
机构信息
Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology, Busan, Republic of Korea Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology Busan Republic of Korea.
Division of Zoology, Honam National Institute of Biological Resources, Mokpo, Republic of Korea Division of Zoology, Honam National Institute of Biological Resources Mokpo Republic of Korea.
出版信息
Biodivers Data J. 2022 Oct 19;10:e90590. doi: 10.3897/BDJ.10.e90590. eCollection 2022.
BACKGROUND
Marine benthic harpacticoid copepods are poorly known in Korea due to the difficulty in obtaining specimens. Currently, the genus Lang, 1936, which is known to occur in subtidal sediments, has not been reported in this area so far. During surveys on the subtidal meiofauna, we found a new species of from several subtidal muddy sediments in the Yellow Sea and South Sea.
NEW INFORMATION
In this study, we describe both sexes of a new species of collected from the Yellow Sea and South Sea of Korea. sp. nov. differs from its congeners in the following characteristics: the trifid rostrum, relative length ratio of the endopods to exopods on legs 1-4, reduced armature formulae on legs 3-4, constricted shape at mid-length of the anal somite, and structure of the sexually dimorphic male leg 3 with a two-segmented endopod. The new species underwent loss of the maxilliped, which is very rare in harpacticoids and is probably an important clue for the phylogeny of the species of .
背景
由于获取标本困难，韩国对海洋底栖猛水蚤类桡足动物了解甚少。目前，已知出现在潮下带沉积物中的1936年朗氏属，在该地区尚未有报道。在对潮下带小型底栖生物的调查中，我们在黄海和南海的几个潮下带泥质沉积物中发现了一个新物种。
新信息
在本研究中，我们描述了从韩国黄海和南海采集的一种新物种的雌雄两性。新物种在以下特征上与其同属物种不同：三叉形吻部、第1 - 4对步足内肢与外肢的相对长度比、第3 - 4对步足上减少的刚毛式、肛节中部长度处的缢缩形状以及具有双节内肢的雄性第3对步足的两性异形结构。新物种经历了颚足的缺失，这在猛水蚤类中非常罕见，可能是该属物种系统发育的重要线索。
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