{"refrec":{"BRefID":318295,"RR":"<b>Jeong, R.; Tchesunov, A.V.; Lee, W.</b> (2019). Bibliographic revision of <i>Mesacanthion</i> Filipjev, 1927 (Nematoda: Thoracostomopsidae) with description of a new species from Jeju Island, South Korea. <i>PeerJ 7</i>: e8023. <a href=\"https://dx.doi.org/10.7717/peerj.8023\" target=\"_blank\">https://dx.doi.org/10.7717/peerj.8023</a>","BEntID":311733,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>PeerJ 7</i>: e8023. <a href=\"https://dx.doi.org/10.7717/peerj.8023\" target=\"_blank\">https://dx.doi.org/10.7717/peerj.8023</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jeong, R.; Tchesunov, A.V.; Lee, W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jeong, R.; Tchesunov, A.V.; Lee, W.","Englishabstract":"A new species of the genus <i>Mesacanthion</i> Filipjev, 1927 was discovered during a survey of natural beaches of Jeju Island in South Korea. The new species <i>Mesacanthion jejuensis</i> sp. nov. shares general morphology of the genus such as the outer labial and cephalic setae being situated at the middle of cephalic capsule, well-developed mandibles with two columns united by a curved bar, and three equally sized and shaped teeth shorter than the mandibles. The new species belongs to a group of <i>Mesacanthion</i> species in which spicules are shorter than two anal body diameters. The new species is most closely related to <i>M. pannosum</i>, first discovered in Puget Sound, Washington, in terms of having enlarged cervical setae flap at the end of cephalic capsule, spicules which are shorter than 2 anal body diameter, both supplementary organ and gubernaculum. It can be distinguished from <i>M. pannosum</i> by its stronger inner labial setae, longer outer labial setae, and difference in the index value of b and c’. Along with the description of <i>Mesacanthion jejuensis</i> sp. nov., the genus <i>Mesacanthion</i> Filipjev, 1927 is bibliographically reviewed and revised. Including the new species, a total of 48 species are described within the genus; 39 which are valid; eight which are considered to be species inquirenda due to misplacement of genus and poor description; one which is considered nomen nudum. An updated diagnosis of the genus is provided along with a compiled tabular key comparing different diagnostic morphological characters of all valid species, as well as a pictorial key consisting of 21 species with spicules shorter than two anal body diameters.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Bibliographic revision of <i>Mesacanthion</i> Filipjev, 1927 (Nematoda: Thoracostomopsidae) with description of a new species from Jeju Island, South Korea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Free-living marine nematodes, Meiofauna, Taxonomy","OtherDescriptors":null,"Notes":null,"AnaPub":2019,"MonPub":null,"DateUpdate":"2019-11-27","DateCreate":"2019-11-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000496776600002","VABBcode":null,"OpenAcc":1,"DOI":"10.7717/peerj.8023"},"refs":null,"anarec":{"AnaID":318295,"PubliDate":2019,"Pagination":"e8023","XtraPublOfAnaID":null,"ISBN":null,"Volume":"7","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":242055,"SerRR":"PeerJ. 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