Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa Author Filander, Zoleka Author Griffiths, Charles text Zootaxa 2017 4296 1 1 72 journal article 32399 10.11646/zootaxa.4296.1.1 ad746972-3837-4f1d-bf97-c09e5d7f1bd5 1175-5326 843325 EFE86EDD-D170-4D97-87D9-3125400713EC Diadema savignyi ( Audouin, 1809 ) Fig. 27 A–B. Diadema savignyi : H.L. Clark, 1925a : 43 ; Clark & Courtman-Stock, 1976 : 225 ; Coleman et al. , 1991 : 169 ; Samyn, 2003: 201, Fig. 2 g; Schultz, 2010 : 102 , Figs 183–186. Material examined. MBC-A023308. Identification. Maximum of five interambulacra tubercles, in horizontal series. Blue iridescent lines along aboral plates, interambulacra with white spots; anal cone black. Spines black, banded in juveniles. Global maximum size. Maximum test diameter 100 mm . Global distribution. Kenya ( Samyn , 2003), Red Sea to East coast of South Africa , eastwards to Easter Islands , from Japan to Australia ; littoral to 70 m depth ( Schultz 2010 ). Remarks. Unlike Chaetodiadema africanum , aboral interambulacra area is not distinctively naked.