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{{Short description|Genus of gastropods}}
{{Automatic taxobox
| image = Stylocheilus striatus.JPG
| image_caption = ''[[Stylocheilus striatus]]''
| taxon = Stylocheilus
| authority = [[Augustus Addison Gould|Gould]], 1852<ref>Gould A. (1852). "Mollusca and Shells". In: [[Charles Wilkes|Wilkes Ch.]], ''[[United States Exploring Expedition]]s, 1838, 1839, 1840, 1841, 1842 under the command of Charles Wilkes, U.S.N.. Philadelphia, C. Sherman & son'', '''12''': [https://www.sil.si.edu/DigitalCollections/usexex/navigation/ScientificText/usexex19_17select.cfm pages 224]-225.</ref>
| type_species= ''Aplysia longicauda'' Quoy & Gaimard, 1825
}}

'''''Stylocheilus''''' is a [[genus]] of [[sea slug]]s, specifically [[Aplysiomorpha|sea hares]], [[marine (ocean)|marine]] [[opisthobranch]] [[gastropod]] [[mollusk]]s in the [[family (biology)|family]] [[Aplysiidae]], the sea hares.<ref>MolluscaBase eds. (2021). [http://www.molluscabase.org/aphia.php?p=taxdetails&id=203969 MolluscaBase. ''Stylocheilus'' Gould, 1852.] Accessed on 2021-01-27.</ref><ref>Bazzicalupo, E.; Crocetta, F.; Gosliner, T. M.; Berteaux-Lecellier, V.; Camacho-García, Y. E.; Chandran, B. K. S.; Valdés, Á. (2020). [https://doi.org/10.1071/is19056 Molecular and morphological systematics of ''Bursatella leachii'' de Blainville, 1817 and ''Stylocheilus striatus'' Quoy & Gaimard, 1832 reveal cryptic diversity in pantropically distributed taxa (Mollusca : Gastropoda : Heterobranchia).] Invertebrate Systematics. 34: 535-568.</ref>

According to some authors this genus belongs in the family [[Dolabriferidae]].

==Species==
Species in the genus ''Stylocheilus'' include:
* ''[[Stylocheilus polyomma]]'' (Mörch, 1863)
* ''[[Stylocheilus rickettsi]]'' (MacFarland, 1966)
* ''[[Stylocheilus striatus]]'' Quoy & Gaimard, 1832
** Distribution : [[Indo-Pacific]]; intertidal, occurs up to 30 m depth
** Length : 65 [[millimetre|mm]]
** Color : brownish, with blue spots; lined species, with dark longitudinal lines (as stated by its name ''striatus'') and small eyespots, providing excellent [[camouflage]].
** Description : Feeds on blue-green algae; gives off a purple ink when disturbed.
; Taxon inquirendum:
* ''[[Stylocheilus longicauda]]'' [[Jean René Constant Quoy|Quoy]] & [[Joseph Paul Gaimard|Gaimard]], 1824 - Blue-ring Sea Hare, Lemon Sea Hare (used to be called ''Stylocheilus citrina'')
** Distribution : circumtropical, [[Indo-Pacific|Indo-West Pacific]].
** Color : bright yellow or green with bluish eyespots, no lines.
** Description : This is one of the most specialized sea hares; elongate body with a long "tail" (as stated by its name ''longicauda''), adapted for living on floating seaweed; feeds on [[Mermaid's Hair]], blue-green [[alga]]e of species ''Lynghya majuscula''; at times, they are abundant, with several thousands crawling in the sand, traveling in chains ("snail trail") up to 10 [[metre|m]] long
;Species brought into synonymy:
* ''Stylocheilus citrinus'' (Rang, 1828) is a synonym of ''Stylocheilus longicauda'' (Quoy & Gaimard, 1825)
* ''Stylocheilus lineolatus'' Gould, 1852: synonym of ''Stylocheilus longicauda'' (Quoy & Gaimard, 1825)
* ''[[Stylocheilus quercinus]]'' Gould, 1852

==References==
{{Reflist}}
* Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda

== External links ==
{{Commons category}}
* {{Malacologia14radula}}
* [http://www.geocities.co.jp/NatureLand-Sky/8447/021112M.htm Image of the Blue-ring Sea Hare]
* [https://www.turtles.org/special/snailtrail1990813pm.jpg 'Snail trail' of the Blue-ring Sea Hare]
* [https://web.archive.org/web/20070929034830/http://www.philippine-sea-slugs.com/ANASPIDEA/Stylocheilus_striatus_01.htm Image of ''Stylocheilus striatus'']

{{Taxonbar|from=Q3169076}}
{{Authority control}}

[[Category:Aplysiidae]]
[[Category:Taxa named by Augustus Addison Gould]]

{{Aplysiidae-stub}}

Stylocheilus - Revision history

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