Genus Entacmaea Ehrenberg, 1834

Museums

Regional Maps

• Entacmaea Ehrenberg, G.G. 1834. Beitrage zur physiologischen Kenntniss der Corallenthiere im Allgemeinen und besanders des Rothen Meeres nebst, einem Versuche zur physiologischen Systematik derselben. Abhandlungen der Königlich-Preussischen Akademie der Wissenschaften. Berlin 1832(1): 225–380 [258-262].

  Type species:

   Actinia quadricolor Rüppell & Leuckart, 1828 by subsequent designation.

Distribution

States

Northern Territory, Queensland, Western Australia

IBRA and IMCRA regions

IMCRA

Lord Howe Province (14), Norfolk Island Province (21), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Southwest Shelf Transition (30), Southwest Shelf Province (31), Central Eastern Shelf Transition (39), Northeast Shelf Province (40)

Diagnosis

Pedal disc well developed. Column smooth; margin distinct, lacking spherules or pseudospherules; fosse generally deep. Inner tentacles typically longer than outer; longitudinal muscles ectodermal, circular muscles endodermal. Number of siphonoglyphs variable. Mesenteries numerous, many complete, all stronger ones including directives fertile; mesenteries added at margin; retractors diffuse, often band-like; a pair of directives usually connected to each siphonoglyph. Endodermal marginal sphincter muscle diffuse, sometimes weak, in rare cases some lamellae invade mesoglea. Cnidom: spirocysts, basitrichs, microbasic p-mastigophores.

General References

Griffith, J.K. & Fromont, J. 1998. A catalogue of recent Cnidaria type specimens in the Western Australian Museum of Natural Science, Perth. Records of the Western Australian Museum 19: 223–239

History of changes