Trochocyathus sp.

Reyes, Javier, Santodomingo, Nadiezhda & Cairns, Stephen, 2009, Caryophylliidae (Scleractinia) from the Colombian Caribbean, Zootaxa 2262 (1), pp. 1-39 : 9

Trochocyathus sp. cf. T. fasciatus Cairns, 1979

Figs. 2L–M

Trochocyathus fasciatus Cairns, 1979: 81–82 , pl. 14 fig. 10, pl. 15 figs. 1–3.—Lattig, 2000: 118–119, fig. 62.— Lattig & Reyes, 2001: 29–30, fig. 6.— Santodomingo et al., 2007: 287 (listed).

Remarks: Colombian specimens have white corolla. Costae are rounded and granulated, more prominent near the calicular edge that extend to the base and covered with thin and smooth epitheca around the calicular edge. Septal granulation is low and rounded. Colombian specimens differ from the type material in the absence of C1–3 brown pigmentation, and also in the presence of very thin and shallow intercostals furrows. The best preserved specimen is 4.88 mm in GCD and 2.66 mm in PD; PD:GCD relation is 0.48. The largest corallite is 6.2 mm in GCD.

Distribution: Previously known only from Yucatan ( Cairns 1979) at 238 m depth. In Colombia, T. sp. cf. fasciatus was collected off Santa Marta and San Bernardo Islands, between 105 and 218 m depth. This record extends its bathymetric range up to 105 m depth.

Material: INV CNI379 , 1 specimen , E7; INV CNI2877 , 4 specimens , D36; INV CNI2886 , 1 specimen , D76; INV CNI2920 , 6 specimens , C3.

Figures

FIGURE 2. A–B, Caryophyllia berteriana, INV CNI2553, off San Bernardo Islands, calicular and lateral views, both x 1.5; C, Caryophyllia crypta, USNM 99187, Santa Marta, paratype, x 4; D–E, Caryophyllia barbadensis, INV CNI669, off San Bernardo Islands, calicular and lateral views, both x 10; F–G, Caryophyllia ambrosia caribbeana, INV CNI364, off La Rada inlet, calicular and lateral views, both x 1.6; H–I, Coenocyathus parvulus, INV CNI671, off San Bernardo Islands, calicular and lateral views, both x 10; J–K, Trochocyathus rawsonii, INV CNI681, off Gulf of Morrosquillo, calicular and lateral views, both x 3.2; L–M, Trochocyathus sp. cf. T. fasciatus, INV CNI379, off Santa Marta, calicular and lateral views, both x 4.6; N, Tethocyathus prahli, INV CNI905, off La Guajira (Punta Gallinas), calicular view x 2.7; O, T. prahli, INV CNI1514, off Chocó, Pacific Ocean, calicular view x 2.7; P–Q, Tethocyathus variabilis, INV CNI2404, off San Bernardo Islands, calicular and lateral views, both x 4; R–S, Paracyathus pulchellus, INV CNI2305, off La Guajira, calicular and lateral views, both x 4.4; T–U, Polycyathus senegalensis, INV CNI809, off La Guajira, calicular view and colony, both x 2.7; V, Cladocora debilis, INV CNI877, off Palomino, colony fragment showing typical branching pattern, x 0.8. Scale bars for A–B, F–G,V = 1 cm;C, J–U = 5 mm; D–E, H–I = 1 mm.