Stylocheilus is a genus of sea slugs, specifically sea hares, marine opisthobranch gastropod mollusks in the family Aplysiidae, the sea hares.
According to some authors this genus belongs in the family Dolabriferidae.
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 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 Quoy & Gaimard, 1824 - Blue-ring Sea Hare, Lemon Sea Hare (used to be called Stylocheilus citrina)
- Distribution : circumtropical, 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 algae of species Lynghya majuscula; at times, they are abundant, with several thousands crawling in the sand, traveling in chains ("snail trail") up to 10 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
^ Gould A. (1852). "Mollusca and Shells". In: Wilkes Ch., United States Exploring Expeditions, 1838, 1839, 1840, 1841, 1842 under the command of Charles Wilkes, U.S.N.. Philadelphia, C. Sherman & son, 12: pages 224-225.
^ MolluscaBase eds. (2021). MolluscaBase. Stylocheilus Gould, 1852. Accessed on 2021-01-27.
^ Bazzicalupo, E.; Crocetta, F.; Gosliner, T. M.; Berteaux-Lecellier, V.; Camacho-García, Y. E.; Chandran, B. K. S.; Valdés, Á. (2020). 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.
- Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda