Isanthidae Carlgren 1938

• Main Authors: Häussermann, Verena, Försterra, Günter
• Format: Text
• Language: unknown
• Published: Zenodo 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Anthozoa; Actiniaria; Isanthidae; Antarctic; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.5688853; https://zenodo.org/record/5688853

Family Isanthidae Carlgren, 1938 Definition of the family Isanthidae Carlgren (1938, p. 59) defined the family Isanthidae as “ Nynantheae with basilar muscles. Sphincter mesogloeal. Mesenteries divisible into macro- and microcnemes. No acontia.” In his catalogue, Carlgren (1949, p. 76) changed the family definition to “Thenaria (Mesomyaria) with well developed mesogloeal sphincter. Mesenteries divisible into macro- and microcnemes. No acontia. Retractors of mesenteries very strong, strongly restricted (reniform) to almost circumscribed.” Due to the weak sphincter of Eltaninactis infundibulum , Dunn (1983, p. 58) proposed to alter the first sentence of the generic description to “Thenaria (Mesomyaria) with mesogloeal sphincter...” instead of “….with well developed mesogleal sphincter…”. Uncertainty remains over the affiliation of the genus Eltaninactis to the family Isanthidae, as noted in Sanamyan’s (2001) description of E. psammophorum . Type species: Isanthus capensis Carlgren, 1938 (Fig. 6) Definition of the genus Paraisanthus Sanamyan and Sanamyan, 1998: Isanthidae with well-developed pedal disc. Column smooth. Margin distinct. Sphincter mesogloeal, well developed. Radial muscles of oral disc and longitudinal muscles of tentacles ectodermal. Two siphonoglyphs, two pairs of directives. Six pairs of macrocnemes. More mesenteries distally than proximally, at least in adults. Cnidom: spirocysts, p-mastigophores, basitrichs, heterotrichs, holotrichs. Type species: Paraisanthus tamarae Sanamyan and Sanamyan, 1998 : Published as part of Häussermann, Verena & Försterra, Günter, 2008, A new species of sea anemone from the Chilean fjord region, Paraisanthus fabiani (Actiniaria: Isanthidae), with a discussion of the family Isanthidae Carlgren, 1938, pp. 27-42 in Zootaxa 1897 on pages 31-32, DOI: 10.5281/zenodo.184465 : {"references": ["Carlgren, O. (1938) South African Actiniaria and Zoantharia. Kungliga Svenska Vetenskaps Akademiens Handlingar, 17, 1 - 148.", "Carlgren, O. (1949) A survey of the Ptychodactaria, Corallimorpharia and Actiniaria. Kungliga Svenska Vetenskaps Akademiens Handlingar, Fjarde Serien, 1, 1 - 121.", "Dunn, D. F. (1983) Some Antarctic and Sub-Antarctic sea anemones (Coelenterata: Ptychodactiaria and Actiniaria). Biology of the Antarctic Seas XIV Antarctic Research Series, 39, 1 - 67.", "Sanamyan, N. P. & Sanamyan, K. E. (1998) Some Actiniaria from the Commander Islands (Cnidaria: Anthozoa). Zoosystematica Rossica, 7, 1 - 8."]}