Harenactis Torrey, 1902

Lauretta, Daniel, Rodríguez, Estefanía & Penchaszadeh, Pablo E., 2011, A new vermiform sea anemone (Anthozoa: Actiniaria) from Argentina: Harenactis argentina sp. nov., Zootaxa 3027, pp. 9-18 : 11

Genus Harenactis Torrey, 1902

Diagnosis (after Carlgren (1949), modifications in bold). Elongate Haloclavidae with a physa-like aboral end which can flatten into a disc. Column smooth with longitudinal rows of cinclides distally. No marginal sphincter. Tentacles 24, the inner shorter than the outer ones (?); their longitudinal muscles ectodermal. A single siphonoglyph, without a conchula. All mesenteries macrocnemes. The fifth and sixth couples may be weaker than the eight other mesenteries of the first cycle. All mesenteries or only those of the first cycle fertile. Retractors and parietal muscles of the older mesenteries strong, the former reniform. Cnidom: spirocysts, basitrichs, microbasic b -mastigophores and microbasic p -mastigophores.

Type species. Harenactis attenuata Torrey, 1902 .

Remarks. The diagnosis from Carlgren (1949) has been modified to accommodate the new species within the genus; this includes the possibility of all mesenteries being fertile, the fifth and sixth couples of mesenteries not always being weaker than the others, and the presence of microbasic b -mastigophores. Some changes in the wording have been made (e. g. vertical/longitudinal, upper part/distally) to standardize the language in the diagnosis.