Stylocheilus

Stylocheilus is a genus of sea slugs, specifically sea hares, marine opisthobranch gastropod mollusks in the family Aplysiidae, the sea hares.

Stylocheilus
Stylocheilus striatus
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Euopisthobranchia
clade Aplysiomorpha
P. Fischer, 1883
Superfamily:
Aplysioidea
Family:
Aplysiidae
Genus:
Stylocheilus

Gould, 1852[1]
Type species
Aplysia longicauda Quoy & Gaimard, 1825

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

Species

Species in the genus Stylocheilus include:

  • 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
  • Stylocheilus striatus Quoy & Gaimard, 1832
    • Distribution : circumtropical; 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 quercinus Gould, 1852
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)
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References
  1. 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.
  • Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda
  • Gould A. (1852). Mollusca and Shells [in]: United States Exploring Expeditions, 1838, 1839, 1840, 1841, 1842 under the command of Charles Wilkes, U.S.N.. Philadelphia, C. Sherman & son : vol. 12, xv + 510 pp
  • SEM images of the radula can be found at Thompson, T.E.; Bebbington, A. (1973). "Scanning electron microscope studies of gastropod radulae". Malacologia. 14: 147–165.
  • Image of the Blue-ring Sea Hare
  • 'Snail trail' of the Blue-ring Sea Hare
  • Image of Stylocheilus striatus
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