Cycloseris costulata ( Ortmann, 1889 )

Hoeksema, Bert W. & Lane, David J. W., 2014, The mushroom coral fauna (Scleractinia: Fungiidae) of Brunei Darussalam (South China Sea) and its relation to the Coral Triangle, Raffles Bulletin of Zoology 62, pp. 566-580 : 568

Cycloseris costulata ( Ortmann, 1889)

( Fig. 3I )

Cycloseris costulata – Turak & DeVantier, 2011: 126.

Cycloseris erosa – Turak & DeVantier, 2011: 127.

Cycloseris vaughani – Turak & DeVantier, 2011: 130. This free-living species is common at Brunei: recorded at 14 out of 17 sites ( Table 2). It was not observed in fragmenting shape. Although the illustrated specimen has a violet margin ( Fig. 3I ), the usual colour of this species is even brown ( Gittenberger & Hoeksema, 2006). It has also been recorded as C. erosa ( Döderlein, 1901) (see Turak & DeVantier, 2011), which actually is a synonym for C. tenuis (see Hoeksema, 1989). The colouration of a specimen illustrated and identified as C. vaughani by Turak & DeVantier (2011) is typical for C. costulata (compare Hoeksema, 1989; Hoeksema & Van Ofwegen, 2004; Gittenberger & Hoeksema, 2006). The costae of another specimen illustrated and identified as C. vaughani by Turak & DeVantier (2011) resembles those of C. boschmai Hoeksema, 2014 , which has not been found during the present study, although it has been recorded at the reefs of Kota Kinabalu, located 150 km away in a NE direction ( Waheed & Hoeksema, 2014). In comparison to C. boschmai and C. vaughani , C. costulata has less pronounced lower order costae.

Figures

Fig. 3. A, B, Cycloseris fragilis, complete coral at Hornet Reef (Brunei Patches), fragmenting coral at Abana Rock, north; C, Cycloseris sinensis, fragmenting coral at Abana Rock, north; D–F, Cycloseris cyclolites at Hornet Reef (Brunei Patches), complete coral, fragmenting coral upper and lower side; G, H, Cycloseris somervillei at Chearnley Shoal, upper and lower side of a coral; I, Cycloseris costulata at Pelong Rocks, northeast; J, Cycloseris tenuis at Hornet Reef (Brunei Patches); K, Cycloseris vaughani at Colombo Reef (Champion Shoal).