@article{b99f2c2690e44159b9d85dc9b79ff78b,
title = "A New Free-living Marine Nematode Species of the Genus Graphonema (Nematoda: Chromadorida: Chromadoridae) from Antarctica",
abstract = "A new species of free-living marine nematode (Chromadorida: Chromadoridae), Graphonema antarcticum sp. nov., is described. The nematode was found in the shallow water of Kita-no-ura, off Syowa Station in L{\"u}tzow-Holm Bay, Antarctica. Graphonema antarcticum sp. nov. is similar to G. metuliferum Kito, 1981 in the ratios of the spicules length to the body diameter at the cloaca, the well-developed gubernaculum with L-shaped lateral pieces bending at an obtuse angle and equipped with minute denticles at the distal end, and the tail length in both sexes. However, G. antarcticum sp. nov. differs from the latter in having a larger body size and presence of the lateral differentiation. The new diagnosis of the genus and the key to the species are provided. Graphonema achaeta Platonova, 1971 was transferred to Endeolophos due to the absence of the lateral pieces of gubernaculum that are present in the genus Graphonema.",
keywords = "Endeolophos achaeta, Syowa Station, Systematics, meiobenthos, meiofauna, new combination, new species, taxonomy",
author = "Daisuke Shimada and Megumu Tsujimoto and Kentaro Watanabe",
note = "Funding Information: This study is an outcome of JARE 46 and the NIPR workshop on the diversity of the Antarctic meiobenthos held on 1–2 November 2016. We wish to thank all members of JARE 46 and the officers and crew of the icebreaker Shirase for their support. We also thank Dr. Kenji Kito (Sapporo Medical University), Dr. Hiroshi Kajihara (Hokkaido University) and Dr. Keiichi Kakui (Hokkaido University) for arranging loans of type specimens of G. metuliferum. We would like to thank Enago (www.enago.jp) for the English language review. This work was funded by NIPR through General Collaboration Project no. 28-43, and partly supported by grants to DS from the Keio Gijuku Academic Development Funds and from the Research and Education Center for Natural Sciences, Keio Gijuku. Publisher Copyright: {\textcopyright} 2019. The Japanese Society of Systematic Zoology",
year = "2021",
doi = "10.12782/specdiv.24.61",
language = "English",
volume = "24",
pages = "61--67",
journal = "Species Diversity",
issn = "1342-1670",
publisher = "Japanese Society of Systematic Zoology",
number = "1",
}
