Onyx disparamphis sp. n. (Nematoda, Desmodorida) from South Korea with a taxonomic review of the genusopen access
- Authors
- Tchesunov, Alexei V.; Jeong, Raehyuk; Lee, Wonchoel
- Issue Date
- Mar-2022
- Publisher
- PEERJ INC
- Keywords
- Desmodoridae; Free-living marine nematodes; Jeju Island; Pictorial key; Taxonomy; Onyx; New species
- Citation
- PEERJ, v.10, pp.1 - 22
- Indexed
- SCIE
SCOPUS
- Journal Title
- PEERJ
- Volume
- 10
- Start Page
- 1
- End Page
- 22
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139155
- DOI
- 10.7717/peerj.13010
- ISSN
- 2167-8359
- Abstract
- A new free-living marine nematode Onyx disparamphis sp. n. (Nematoda, Desmodorida) is described from sandy littoral of Jeju Island, South Korea. The new species differs from all other Onyx species by the unusual amphideal fovea morphology in males (elongated loop). O. disparamphis relates to O. balochinensis, and O. brevispiculatum by having simple non-double terminal pharyngeal bulb and relatively small and straight, non-sigmoid supplementary organs, but differs from them by smaller body length, shorter cephalic setae, smaller terminal pharyngeal bulb, smaller spicules, number of supplementary organs and tail shape expressed as ratio tail length/anal diameter. The genus Onyx is revised with updated genus diagnosis, and an annotated list of 23 valid species is presented. Onyx ferox is considered species inquirenda because the species is known only from a sole immature female specimen, while within Onyx, the males provide the most important distinguishing characters such as enlarged and complicated amphids, supplementary organs and copulatory spicules. For species identification, a pictorial key consisting of illustrations of simplified icons of male heads and posterior body sections, as well as a table of the most important morphometric and numerical characters are provided. Geographical distribution and habitat specifity of Onyx species is analysed briefly.
- Files in This Item
-
- Appears in
Collections - 서울 자연과학대학 > 서울 생명과학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139155)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.