Synhalcurias Carlgren, 1914

Izumi, Takato & Yanagi, Kensuke, 2021, Description of the second species of Synhalcurias Carlgren, 1914, Synhalcurias kahakui sp. nov. (Actiniaria: Actinernidae) with redescription of S. elegans (Wassilieff, 1908), Zootaxa 5048 (4), pp. 561-574 : 564

publication ID	https://doi.org/10.11646/zootaxa.5048.4.5
publication LSID	lsid:zoobank.org:pub:4EB228BE-313B-4092-B776-B145A9335B2A
DOI	https://doi.org/10.5281/zenodo.5556750
persistent identifier	https://treatment.plazi.org/id/4103C076-FFBB-FF9B-FF29-37F9FAB2FD61
treatment provided by	Plazi (2021-10-08 11:52:21, last updated 2024-11-25 18:08:58)
scientific name	Synhalcurias Carlgren, 1914
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Genus Synhalcurias Carlgren, 1914 View in CoL

Synhalcurias Carlgren, 1914: 53 View in CoL ; Carlgren, 1918: 27; Stephenson, 1922: 260; Carlgren, 1949: 19.

Diagnosis. Column cylindrical, distally not expanded, nor forming lobes; with many simple tentacles. Mesenteries 68 to ca. 100, all mesenteries perfect and fertile. After formation of ten first pairs of mesenteries (1st and 2nd cycles), further mesenterial formation cyclical in each of eight lateral endocoels, similar to Halcurias . Two siphonoglyphs. Column ectoderm with or without small nematocyst batteries. Cnidom: basitrichs, spirocysts, microbasic b -mastigophores, microbasic p -mastigophores (each in all tissue). (Modified from Uchida [2007], changes in bold)

Type species. Synactinernus elegans ( Wassilieff, 1908)

Remarks. Synhalcurias has been recognized as monotypic since it was established by Carlgren (1914) (see also Carlgren, 1949; Fautin, 2016). In this study, we describe a second species for this genus, S. kakahui sp. nov. To incorporate this additional species, we rearranged the diagnosis as below: 1) adding the cnidom; 2) added the case that not nematocyst batteries in the column; 3) revised that all mesenteries perfect (instead of “almost all”).

References

Carlgren, O. (1914) On the genus Porponia and related genera, Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh, 50, 49 - 71. https: // doi. org / 10.1017 / S 0080456800017270

Carlgren, O. (1918) Die Mesenterienanordnung der Halcuriiden. Kungliga Fysiografiska Sallskapets Handlingar, 29, 1 - 37.

Carlgren, O. (1949) A survey of the Ptychodactiaria, Corallimorpharia and Actiniaria. Kungliga Svenska Vetenskapsakademiens Handlingar, 1, 1 - 121.

Fautin, D. G. (2016) Catalog to families, genera, and species of orders Actiniaria and Corallimorpharia (Cnidaria: Anthozoa). Zootaxa, 4145 (1), 1 - 449. https: // doi. org / 10.11646 / zootaxa. 4145.1.1

Stephenson, T. A. (1922) On the classification of Actiniaria. Part III. - Definitions connected with the forms dealt with in Part II. Quarterly Journal of Microscopical Science, 66, 247 - 319. https: // doi. org / 10.1242 / jcs. s 2 - 66.262.247

Uchida, H. (2007) Actinologia japonica (2) on the actiniarian family Actinernidae from Japan. Kuroshio Biospheres, 3, 17 - 32.

Wassilieff, A. (1908) Japanische Actinien. Abhandlungen des Mathematischen-Physikalischen Institutes der Kaiserlichen Bayerischen Akademie der Wissenschaften, Supplement 1, 1 - 49.