Acropora hemprichii (Ehrenberg, 1834)

(Fig. 40)

Heteropora hemprichii Ehrenberg, 1834: 109 .

Type locality. Red Sea (syntypes MNB).

MTQ Holdings. Red Sea: G54682, G54871, G55244, G62977, G62983, G62985 Saudi Arabia; G58868 Yemen. Species group: rudis.

Description. Colony outline: indeterminate, predominantly arborescent. Branches: tertiary branching order present; length: 50–100 mm; diameter:>19.9 mm, axial-dominated, tapering; radial crowding: most touching; axial/radial ratio:>1:10. Axial corallites: greater than three

synapticular rings; not porous; outer diameter 2.7–4.1 mm; inner diameter 0.8–1.2 mm; primary septa to ¾ R. Radial corallites: large; two synapticular rings; one size or graded; inner wall developed; shape: rounded tubular; openings: oval-rounded; primary septa to 2/3 R. Coenosteum: same on and between radials: reticulate; spinule shape: single point.

Further literature. Sheppard & Sheppard (1991), Wallace (1999), Veron (2000).