New records of deep-water Scleractinia off Argentina and the Falkland Islands Author Cairns, Stephen D. Author Polonio, Virginia text Zootaxa 2013 3691 1 journal volume 10.11646/zootaxa.3691.1.2 8aa312d2-5105-4aea-8c40-191f8ea619b3 1175-5326 222205 D25D3DD9-8C09-4F9B-91AB-48853F444756 Flabellum curvatum Moseley, 1881 Figs. 1A , 3 K–M, 14 Flabellum curvatum Moseley, 1881: 174 –175, pl. 6, figs. 3a–d.—Squires, 1969: 18, pl. 6, map 3.—Cairns, 1982: 35–38, pl. 10, figs. 10–11, pl. 11, figs. 6–9, map 9 (complete synonymy); 1990: 50–51, fig. 17.—Cairns et al. , 2005: 40. Remarks. This species was well described and figured by Cairns (1982). The largest specimen examined from off Argentina (ATL09-Lo59) is 47.8 x 30.6 mm in calicular diameter and 68 mm in height. Some specimens ( Fig. 3 M) differ slightly from the typical populations in having less corallum curvature, a straight pedicel, and lacking serrations in the septal notch near the calicular margin. These differences may be related to depth, as these three specimens were collected from 1343–1620 m , and are thus considered as representing the deep-water form of this species. Also, see Remarks of F. thouarsii for a comparison to that very similar species. Flabellum curvatum was the most frequently collected species from this region, often occurring in high density ( Fig. 1 B) and being collected by the hundreds from one trawl. Distribution. Known from entire coast of Argentina from Rio de la Plata to Tierra del Fuego, Falkland Islands , South Georgia , and the southern fjords of Chile , at depths of 115–1137 m ( Fig. 14 ). The records reported herein do not extend its geographic range but do extend its deepest bathymetric range from 1137 to 1620 m . FIGURE 14. Distribution of Flabellum curvatum . Material. Typical form : PAT0108DR1, 40, MNCN; PAT0108DR8, 1, MNCN; PAT0108DR11, 1, MNCN; PAT0108DR12, 10, MNCN; PAT0108DR14, 20, MNCN; PAT1008DR1, 3, MNCN; PAT1008DR3, 5, MNCN; PAT1008DR4,11, MNCN; PAT1008DR5, 1, MNCN; PAT0108DR17, 9, MNCN; PAT1008DR8, 1, MNCN; PAT1008DR9, 2, MNCN; PAT1008DR10, 5, MNCN; PAT1008DR11, 2, MNCN; PAT1008DR12, 7, MNCN; PAT1008DR13, 9, MNCN; PAT1108DR1, 1, USNM 1193299; PAT1108DR2, 1, MNCN; PAT1108DR3, 1, MNCN; PAT1108DR5, 20, MNCN; PAT1108DR8, 6, MNCN; PAT1108DR10, 3, MNCN; PAT1108BC5, 5, MNCN; PAT1208DR4, 1, MNCN; PAT1208DR5, 12, MNCN; PAT1208DR6, 9, MNCN; PAT1208DR7, 7, MNCN; PAT1208DR9, 14, MNCN; PAT1208DR10, 2, MNCN; PAT1208DR11, MNCN; PAT1208DR14, 6, MNCN, and 1, USNM 1193304; PAT1208DR16, 7, MNCN, and 3, USNM 1193296 and 1193302; PAT1208DR17, 1, USNM 1193294; PAT1208DR18, 2, MNCN; PAT0209DR1, 9, MNCN; PAT0209DR2, 7, MNCN; PAT0209DR3, 16, MNCN; PAT0209DR5, 9, MNCN; PAT0209DR14, 9, MNCN; PAT0209Dr15, 3, MNCN; PAT0209BC7, 4, MNCN; PAT0209BC27, 5, MNCN; PAT0209BC34, 1, MNCN; PAT0210DR4, 19, MNCN; PAT0210DR6, 4, MNCN; PAT0210DR7, 6, MNCN; PAT0210DR8, 2, MNCN; PAT0210DR9, 1, MNCN; ATL08Lo3, 2, MNCN; ATL08Lo48, 1, MNCN; ATL08Lo54, 2, MNCN; ATL08Lo56, 1, MNCN; ATL08Lo57, 5, MNCN; ATL08Lo68, 2, MNCN; ATL08Lo72, 3, MNCN; ATL08Lo75, 2, MNCN; ATL08Lo78, 4, MNCN; ATL08Lo86, 1, MNCN; ATL08Lo97, 1, MNCN; ATL08Lo103, 3, MNCN; ATL08Lo104, 5, MNCN; ATL08Lo107, 2, MNCN; ATL08Lo108, 7, MNCN; ATL08Lo111, 1, MNCN; ATL08Lo124, 1, MNCN; ATL08Lo129, 1, MNCN; ATL08Lo136, 1, MNCN; ATL09Lo7, 1, MNCN; ATL09Lo8, 1, MNCN; ATL09Lo9, 1, MNCN; ATL09Lo14, 30, MNCN; ATL09Lo15, 4, MNCN; ATL09Lo52, 1, MNCN; ATL09Lo56, 1, MNCN; ATL09Lo57, 1, MNCN; ATL09Lo58, 3, MNCN; ATL09Lo59, 2, MNCN, and 2, USNM 1193297; ATL09Lo60, 6, MNCN; ATL09Lo61, 2, MNCN; ATL09Lo63, 9, MNCN; ATL09Lo65, 8, MNCN; ATL09Lo66, 7, MNCN, and 1, USNM 1193295; ATL09Lo67, 3, MNCN; ATL09Lo69, 4, MNCN; ATL09Lo70, 1, MNCN; ATL09Lo71, 4, MNCN; ATL09Lo72, 3, MNCN; ATL09Lo73, 1, MNCN; ATL09Lo74, 1, MNCN; ATL09Lo77, 3, MNCN; ATL09Lo79, 2, MNCN; ATL09Lo80, 1, MNCN; ATL09Lo81, 2, MNCN; ATL09Lo83, 4, MNCN; ATL09Lo84, 1, MNCN; ATL09Lo86, 1, MNCN; ATL09Lo91, 6, MNCN; ATL09Lo92, 1, USNM 1193303; ATL09Lo95, 4, MNCN; ATL09Lo96, 1, MNCN; ATL09Lo98, 2, MNCN; ATL09Lo103, 1, MNCN; ATL09Lo112, 3, MNCN; ATL09Lo113, 2, MNCN; ATL09Lo113, 2, MNCN; ATL09Lo117, 2, MNCN; ATL09Lo118, 2, MNCN; ATL0310Lo2, 4, MNCN; ATL0310Lo3, 18, MNCN; ATL0310Lo4, 1, MNCN; ATL0310Lo7, 10, MNCN; ATL0310Lo8, 7, MNCN; ATL0310Lo9, 10, MNCN; ATL0310Lo10, 3, MNCN; ATL0310Lo23, 1, MNCN; ATL0310Lo33, 2, MNCN; ATL0310Lo34, 1, MNCN; ATL0310Lo51, 1, MNCN; ATL0310Lo53, 1, MNCN; ATL0310Lo59, 2, MNCN; ATL0310Lo60, 1, MNCN; ATL0310Lo64, 1, MNCN; ATL0310Lo79, 1, MNCN; ATL0310Lo87, 2, MNCN; ATL10Lo89, 2, USNM 1193298. Deep-water straight form : PAT0209DR7, 1, USNM 1193301; ATL09Lo100, 1, USNM 1193300; ATL09Lo101, 1, USNM 1193305.