Scolanthus Gosse, 1853

Izumi, Takato & Fujita, Toshihiko, 2018, Description of three new species of Scolanthus (Cnidaria, Anthozoa, Actiniaria, Edwardsiidae): first records of the genus from Japan, ZooKeys 794, pp. 1-21: 1

publication ID

http://dx.doi.org/10.3897/zookeys.794.25243

publication LSID

lsid:zoobank.org:pub:348B2A55-62C3-4601-AA89-0751CF7D455E

persistent identifier

http://treatment.plazi.org/id/EDCDF441-1C63-8000-67F9-7FE2EEE944AF

treatment provided by

ZooKeys by Pensoft

scientific name

Scolanthus Gosse, 1853
status

 

Scolanthus Gosse, 1853 

Diagnosis.

Edwardsiidae  with body divisible into scapus and capitulum. Proximal part of body rounded, provided with nemathybomes and never forming physa. Nemathybomes scattered or forming longitudinal lines on scapus. At least eight microcnemes. Tentacle typically 16 to 20 in adults, arranged hexamerously, octomerously or decamerously. Tentacles on inner cycle shorter than those on outer cycle. Retractor muscles relatively large, well developed, and diffused, restricted or circumscribed. Parietal muscles distinct, symmetrical, well developed. Cnidome; spirocysts, basitrichs, microbasic b- and p-mastigophores (revised from Daly and Ljubenkov 2008).

Type species.

Scolanthus callimorphus  Gosse, 1853 by monotypy.

Origin of Japanese name.

New Japanese name: Ashinashi-mushimodoki-ginchaku-zoku. This new Japanese name is constructed from “ashi-nashi” (which means no-foot) and “mushimodoki-ginchaku” (which means worm-like, the Japanese name for edwardsiids). “Ashi-nashi” is named after the most characteristic feature of this genus; no differentiated physa from scapus.

Remarks.

The genus Scolanthus  currently contains seven valid species ( Fautin 2013) not including new species in the current study, and there also are two more species once accommodated within Isoedwardsia  , which was synonymized to Scolanthus  in Manuel (1981). This genus is widely distributed, from tropical ( S. armatus  [Carlgren, 1931]) to subarctic regions ( S. nidarosiensis  [Carlgren, 1942]). No Scolanthus  species, however, have previously been collected from Japan. In this study, Scolanthus armatus  and three new species of Scolanthus  are reported from Japan, representing the first records of this genus from Japan. Consequently, the number of Scolanthus  species is now 12.