Isopora crateriformis (Gardiner, 1898)

Wallace, Carden C., Done, Barbara J. & Muir, Paul R., 2012, Revision and catalogue of worldwide staghorn corals Acropora and Isopora (Scleractinia: Acroporidae) in the Museum of Tropical Queensland, Memoirs of the Queensland Museu Nature 57, pp. 1-258 : 242

Isopora crateriformis (Gardiner, 1898)

( Fig. 119 )

Madrepora crateriformis Gardiner, 1898: 258 , pl. 23 fig. 1.

Type locality. Ellice Islands (Tuvalu) (holotype NHM).

MTQ Holdings. Indonesia: G51551, G51553 Molucca Sea; G51554–56, G51558–59 Halmahera; G61008–10 Irian Jaya; Australia: G58435, G58802–26, G60094–95 South-East; New Caledonia: G58910; Fiji: G58827–28; Samoa: G36633, G38980, G38983, G63112.

Description. Colony outline: determinate, predominantly encrusting. Branches: tertiary branching order absent; length: <25 mm; diameter:>19.9 mm, axial-dominated, reverse tapering; radial crowding: some touching; axial/radial ratio:>1:10. Axial corallites: greater

than three synapticular rings; not porous; outer diameter 1.5–2.2 mm; inner diameter 0.5–0.8 mm; primary septa to 1/3 R. Radial corallites: large; greater than three synapticular rings; one size or graded; inner wall developed; shape: conical; openings: oval-rounded; primary septa to 1/3 R. Coenosteum: same on and between radials: dense spinules; spinule shape: meandroid elaborate.

Further literature: Wallace & Wolstenholme (1998), Wallace (1999), Veron (2000), Dai & Horng (2009), Turak & DeVantier (2011).

Figures

FIG. 119. Isopora crateriformis, Great Barrier Reef, 2011 (photo: P. Muir). Map of documented distribution: blue squares = MTQ specimens; pink squares = literature records; orange diamonds = type localities (where given), including primary synonyms.