Rosso, A.; Beuck, L.; Vertino, A.; Sanfilippo, R.; Freiwald, A. (2018). Cribrilinids (Bryozoa, Cheilostomata) associated with deep-water coral habitats at the Great Bahama Bank slope (NW Atlantic), with description of new taxa. Zootaxa. 4524(4): 401.

335265

10.11646/zootaxa.4524.4.1 [view]

Rosso, A.; Beuck, L.; Vertino, A.; Sanfilippo, R.; Freiwald, A.

2018

4524(4): 401

Publication

Four cribrilinid bryozoans associated with deep-water corals (578–682 m depth) from the Great Bahama Bank slope, are described, two of them are new. The generic allocation of some species prompted us to raise the subgenera Puellina, Cri- brilaria, and Glabrilaria to genus rank. The new combination Cribrilaria saginata (Winston, 2005) n. comb. is proposed. Genus Glabrilaria is reported from the NW Atlantic for the first time based on the description of Glabrilaria hirsuta Ros- so n. sp. and Glabrilaria polita Rosso n. sp. The new genus Teresaspis Rosso n. gen. is erected, and Teresaspis lineata (Canu & Bassler, 1928) n. comb. is proposed as its type species. The new genus Harmelinius Rosso n. gen. is erected for Cribrilina uniserialis (Harmelin, 1978). Both genera have uniserial colonies formed by slightly caudate zooids with ex- tensive gymnocyst and a frontal shield of flattened costae. Teresaspis lineata n. comb., however, has costae with pelma- tidia that are connected by few intercostal bridges and separated by intercostal spaces, four orificial costa-like processes with the proximal pair arching above the orifice, hyperstomial acleithral ovicells with a pseudoporous ooecium formed by the distal zooid or a kenozooid, two types of kenozooids (large with costate frontal shield and small with smooth shield and central opesia), and an ancestrula with costate frontal shield. Avicularia are apparently absent in this species. In con- trast, the type species of Harmelinius Rosso n. gen. has costae lacking pelmatidia and which are separated by slit-like in- tercostal spaces. The hyperstomial cleithral ovicells have smooth ooecia with a median suture and without pseudopores, and are formed by a distal kenozooid associated with a small avicularium. Additional paired oral avicularia are occasion- ally present, as are large kenozooids with a central opesia. Oral spines or spine-like processes are absent. Taxonomy of the above reported cribrilinid genera is discussed in detail together with the geographic distribution of all mentioned taxa.

Tropical West Atlantic

Systematics, Taxonomy

Ectoprocta

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