On the genus Coelocalypta (Porifera: Demospongiae)and other related fistulose halichondrid genera
Carballo, J.L. (2001). On the genus Coelocalypta (Porifera: Demospongiae)and other related fistulose halichondrid genera. Cah. Biol. Mar. 42(3): 255-262
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094
Coelocalypta is a fistulose halichondrid genus very close to others like Ciocalypta and Collocalypta. The genus has been synonymyzed and the species hitherto known as Coelocalypta porrecta, C. aderma and C. hyaline were transferred to other genera by some authors. However, after examination of several specimens of Coelocalypta porrecta from the Gulf of Cadiz and type material from the species Coelocalypta porrecta, Coelocalypta aderma, Ciocalypta penicillus, Ciocalypta microstrongylata and , we propose the validity of these genera based on 1.- the ectosomal skeleton of the fistule: tangential in Ciocalypta, palisade-like in Coelocalypta, and absent in Collocalypta; 2.- the skeletal arrangement in the basal mass of the body: halichondroid-confused in Ciocalypta/Coelocalypta and plumose in Collocalypta; 3.- the presence of a tangential ectosomal skeleton in the basal mass in Ciocalypta, absent in Coelocalypta/Collocalypta. In this way, the genus Coelocalypta would include the species Coelocalypta porrecta which is here redescribed on the basis of SEM observation of new material, as well as Coelocalypta microstrongylata n. comb. Moreover, the new genus Pseudohymeniacidon is proposed to include the species Coelocalypta aderma.
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