Crepidacantha carsioseta Winston and Heimberg, 1986

Dick, Matthew H., Tilbrook, Kevin J. & Mawatari, Shunsuke F., 2006, Diversity and taxonomy of rocky-intertidal Bryozoa on the Island of Hawaii, USA, Journal of Natural History 40 (38 - 40), pp. 2197-2257 : 2239

Crepidacantha carsioseta Winston and Heimberg, 1986

( Figure 13F )

Crepidacantha carsioseta Winston and Heimberg 1986, p 27 , Figures 64–66.

Crepidacantha carsioseta: Ryland and Hayward 1992, p 277 , Figure 25d; Tilbrook et al. 2001, p 92, Figure 16A .

Measurements

ZL, 0.45–0.60 (0.506¡0.040). ZW, 0.26–0.41 (0.323¡0.041). OrL, 0.09–0.10 (0.097¡0.005). OrW, 0.07–0.10 (0.083¡0.010). OvL, 0.13–0.16 (0.134¡0.013). OvW, 0.15–0.19 (0.170¡0.014).

Description

Colony unilaminar, encrusting, light tan to off-white in colour. Frontal wall finely tuberculate, imperforate except for small, scarcely evident marginal pores. Primary orifice constricted laterally by obliquely triangular condylar processes; proximal margin convex. Oral spines lacking. A pair of frontal avicularia lies proximal to orifice, both pointing medially, often slightly offset from one another, with long-setose mandibles; marginal zooids with numerous long, spinous processes around zooidal margin. Ovicell raised, globose, smooth, with crescent of pores in a single row.

Distribution

Bali, Indonesia; Great Barrier Reef, Australia; Vanuatu (see synonymies for references). This is the first record for the Hawaiian Islands.

Figures

Figure 13. (A–C) Cribellopora souleorum n. sp., paratype 1 (NHM 2006.7.21.20): (A) autozooids and ovicellate zooids; note predation hole in ovicell at right and scars on both ovicells; (B) enlargement of orifice; (C) ancestrula (lower right) and three periancestrular zooids; note predation holes in frontal walls of two zooids. (D, E) Nimba

Figure 16. Disporella compta n. sp., holotype (NHM 2006.7.21.22): (A) partial view of colony, showing one elongate and two oval maculae among seven maculae present in colony; (B) enlargement of a macula; (C) columns of fused peristomes of three to four autozooids; (D) enlargement of kenozooidal opening showing palm-tree-shaped pinhead spinules. All specimens bleached. Scale bars: 2 mm (A); 1 mm (B); 400 Mm (C); 50 Mm (D).