Clathrina rotunda, Klautau & Valentine, 2003
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publication ID |
https://doi.org/ 10.1046/j.0024-4082.2003.00063.x |
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persistent identifier |
https://treatment.plazi.org/id/03D5484C-D433-C36D-FC17-F999FCA2FB25 |
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treatment provided by |
Carolina |
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scientific name |
Clathrina rotunda |
| status |
sp. nov. |
CLATHRINA ROTUNDA View in CoL SP. NOV.
Original identification: Leucosolenia canariensis Miklucho-Maclay, 1868
Etymology: Latin rotundus (= spherical). Describing the shape of the cormus.
Type locality: St. James , Cape Town, South Africa .
Type: BMNH 1935.10 .21.50 (holotype /alcohol) St. James , Cape Town, South Africa. Professor T. A .
Stephenson Collection (5 September 1933) (Collection number F.232).
Colour: Light brown when preserved.
Description: Cormus spherical, formed of very thin tubes, irregular and tightly anastomosed. Many oscula can be seen, surrounded by a membrane, and only found in the apical region ( Fig. 42A View Figure 42 ). Leading to these oscula, there are water-collecting tubes. Near the base, tubes are regularly anastomosed, and there are no oscula. The skeleton comprises triactines and tripods ( Fig. 42B View Figure 42 ). The tripods are found in the external tubes, arranged side by side, forming a continuous layer, which delimits the cormus ( Fig. 42C View Figure 42 ). Internally, there are only equiangular and equiradiate triactines. Their actines are conical, slightly undulated, with sharp tips.
Remarks: C. rotunda sp. nov. cannot be mistaken for any other of the described clathrinas because it is the only species in which the skeleton comprises triactines and tripods. Other species with tripods always have tetractines as well, such as C. aspina , C. brasiliensis , C. cerebrum and C. tetrapodifera sp. nov.
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