Acropora simplex Wallace & Wolstenholme, 1998

(Fig. 90)

Acropora simplex Wallace & Wolstenholme, 1998: 358, fig. 154.

Type locality. Togian Islands, Sulawesi, Indonesia.

MTQ Holdings. HOLOTYPE G51188; Indonesia: G57095, G57103, G57109 Irian Jaya; Philippines: G55122; Micronesia: G59289, G59651, G59653 Pohnpei.

Species group: loripes.

Description. Colony outline: determinate, predominantly plate. Branches: tertiary branching order absent; length: 50–100 mm; diameter: 2.5–4.9 mm, 50/50 axial/radial, terete; radial

crowding: not touching; axial/radial ratio: <1:10. Axial corallites: three synapticular rings; not porous; outer diameter 1.4–1.8 mm; inner diameter 0.6–0.8 mm; primary septa to 1/3 R. Radial corallites: medium; three synapticular rings; one size or graded; inner wall developed; shape: appressed tubular; openings: oval-round- ed; primary septa to ¾ R. Coenosteum: same on and between radials: dense spinules; spinule shape: elaborate.

Further literature. Wallace (1999), Veron (2000), Turak & DeVantier (2011).