# Onchidium

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{{Short description|Genus of gastropods}}
{{Italic title}}
{{Use dmy dates|date=May 2017}}
{{Automatic taxobox
| image = Onchidium melakense (10.3897-zookeys.892.39524) Figure 6.jpg
| image_caption = Live animals of ''Onchidium melakense'' 
| taxon = Onchidium
| authority = [Buchannan](/source/Buchannan_(surname)), 1800<ref>Buchannan, F. 1800: An account of the ''Onchidium'', a new genus of the class of Vermes, found in Bengal. ''Transactions of the Linnean Society'', '''5''': 132-134, tab. V. [https://www.biodiversitylibrary.org/page/753677 BHL]</ref>
|type_species= ''Onchidium typhae''  <small>Buchannan, 1800</small>
|synonyms=
* ''Elophilus'' <small>Labbé, 1935</small> (invalid: junior homonym of Elophilus Meigen, 1803 [Diptera]; Labbella is a replacement name)
* ''Labbella'' <small>Starobogatov, 1970</small>
* ''Oncidium'' (incorrect subsequent spelling by Agassiz (1846))
}}

'''''Onchidium''''' is a [genus](/source/genus) of air-breathing [sea slug](/source/sea_slug)s, shell-less [marine](/source/marine_(ocean)) [pulmonate](/source/pulmonate) [gastropod](/source/gastropod) [mollusk](/source/mollusk)s in the [family](/source/Family_(taxonomy)) [Onchidiidae](/source/Onchidiidae). 

==Species==
Some authors recognize only four species in the genus.<ref name=":0">{{Cite journal |last1=Dayrat |first1=Benoît |last2=Goulding |first2=Tricia C. |last3=Khalil |first3=Munawar |last4=Apte |first4=Deepak |last5=Tan |first5=Shau Hwai |date=2019-11-27 |title=A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia |url=https://zookeys.pensoft.net/article/39524/ |journal=ZooKeys |language=en |issue=892 |pages=27–58 |doi=10.3897/zookeys.892.39524 |issn=1313-2970 |pmc=6892962 |pmid=31824202 |doi-access=free}}</ref><ref name=":1">{{Cite journal |last1=Dayrat |first1=Benoît |last2=Goulding |first2=Tricia C. |last3=Apte |first3=Deepak |last4=Bhave |first4=Vishal |last5=Comendador |first5=Joseph |last6=Quang |first6=Ngô Xuân |last7=Tan |first7=Siong Kiat |last8=Tan |first8=Shau Hwai |date=2016-11-24 |title=Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae) |url=https://zookeys.pensoft.net/article/8879/ |journal=ZooKeys |language=en |issue=636 |pages=1–40 |doi=10.3897/zookeys.636.8879 |issn=1313-2970 |pmc=5126514 |pmid=27917062 |doi-access=free}}</ref> The [World Register of Marine Species](/source/World_Register_of_Marine_Species) lists six species as accepted.<ref name="WoRMS">{{cite WoRMS|title=Onchidium|id=206430|accessdate=30 August 2024}}</ref> 
* ''[Onchidium melakense](/source/Onchidium_melakense)'' <small>Dayrat & Goulding, 2019</small><ref name=":0" />
* ''[Onchidium multiradiatum](/source/Onchidium_multiradiatum)'' <small>C. Semper, 1882</small>
* ''[Onchidium nebulosum](/source/Onchidium_nebulosum)'' <small>C. Semper, 1880</small>
* ''[Onchidium reevesii](/source/Onchidium_reevesii)'' <small>(J. E. Gray, 1850)</small><ref name=":1" />
* ''[Onchidium stuxbergi](/source/Onchidium_stuxbergi)'' <small>(Westerlund, 1883)</small><ref name=":1" />
* ''[Onchidium typhae](/source/Onchidium_typhae)'' <small>Buchannan, 1800</small><ref name=":1" />
''Onchidium multinotatum'', originally described within the genus in 1883, is regarded as a ''[nomen dubium](/source/nomen_dubium)''.<ref>{{Cite journal|last1=Dayrat|first1=Benoît|last2=Goulding|first2=Tricia C.|last3=Khalil|first3=Munawar|last4=Apte|first4=Deepak|last5=Tan|first5=Shau Hwai|date=27 November 2019|title=A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia|url=https://zookeys.pensoft.net/article/39524/|journal=ZooKeys|language=en|issue=892|pages=27–58|doi=10.3897/zookeys.892.39524|issn=1313-2970|pmc=6892962|pmid=31824202|doi-access=free}}</ref> 

==References==
{{Reflist}}
* Starobogatov, Y. I. (1970). Fauna Molliuskov i Zoogeograficheskoe Raionirovanie Kontinental'nykh Vodoemov Zemnogo Shara [The Molluscan Fauna and Zoogeographical Zoning of the Continental Water Bodies of the World]. Nauka. Leningrad. 372 p., 12 tables
* Labbé A. (1935). Sur une forme nouvelle de Silicoderme, Elophilus ajuthiae nov. gen. nov. sp. Bulletin de la Société Zoologique de France. 60: 312-317

==External links==
{{Commons category}}
* [https://www.biodiversitylibrary.org/page/753677 Buchannan, F. (1800). An account of the Onchidium, a new genus of the class of vermes, found in Bengal. Transactions of the Linnean Society of London. 5: 132–134, pl. 5.]
* [https://doi.org/10.3897/zookeys.636.8879 Dayrat B., Goulding T.C., Apte D., Bhave V., Comendador J., Quang N.X., Tan S.K. & Tan S.H. (2016). Integrative taxonomy of the genus Onchidium Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae). ZooKeys. 636: 1-40]

{{Malacologia14radula}}
{{Taxonbar|from=Q3143158}}

Category:Onchidiidae

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