Distribution & Ecology: Society (Bora Bora, Moorea, Tahiti); Tuamotu (Anuanuraro, Aratika, Fakarava, Hao, Hikueru, Makemo, Marutea South, Mataiva, Moruroa, Pukapuka, Raroia, Takapoto, Tikehau) - Marine; Shoreline to 10 m; Coral obligate associate (Gen. Pocillopora, Stylophora).

Regional Records: Trapezia speciosa Dana, 1852a: 83; 1852b: 253; 1855, pl. 15, fig. 1 ("Carlshoff" = Aratika). - Nobili, 1907: 403 (Marutea). - Seurat, 1934: 59 (Marutea South). - Forest & Guinot, 1961: 133, fig. 131-132, 136a-b (Hikueru); 1962: 70 (Biogeography "Tahiti-Tuamotu"). - Kropp & Birkeland, 1981: 629 (Moorea, Takapoto). - Odinetz, 1983: 205 (Moorea, Tahiti, Takapoto). - Serène, 1984: 278 (Syn.). - Delesalle, 1985: 289 (Mataiva). - Guinot, 1985: 452 (List). - Odinetz-Collart & Richer de Forges, 1985: 201 (Moorea, Tahiti, Takapoto). - Poupin, 1996a: 58, 60 (Checklist). - Castro, 1997b: 129 (Anuanuraro, Bora Bora, Fakarava, Hikueru, Makemo, Marutea, Moorea, Moruroa, Pukapuka, Raroia, Tahiti, Takapoto, Tikehau; Syn.; in part coll. Frv Marara). - Castro et al., 2004: 53, fig. 3d (Neotype from Moruroa atoll, Tuamotu). - Trapezia digitalis speciosa - Rathbun, 1907: 59 (Fakarava, Makemo, Tahiti). - Trapezia bella - Nobili, 1907: 403 (Hao) not T. bella Dana, 1852 = T. speciosa fide Serène (1984: 278). - Moorea Biocode project.

Depth distribution: 0 - 10 m