Characters: Colonies are massive (especially in shallow water) or encrusting. The surface is even, with sinuous valleys 6-9 millimetres wide. Columellae are well developed although interlinked. Ambulacral grooves, if present, are fine.
Colour: Purple-brown, grey or greenish with green or grey valley floors.
Similar Species: Diploria clivosa, which has a rough irregular colony surface, slightly smaller valleys and more numerous septa. Superficially resembles Platygyra daedalea of the Indo-Pacific.
Habitat: Most reef environments, especially shallow slopes and lagoons.
Abundance: Common.
Taxonomic Note: Budd, Fukami, Smith et al. (2012) place Diploria clivosa and Diploria strigosa in the separate genus Pseudodiploria based primarily on the usual absence of the ambulacral groove found in D. labrynthiformis. However, this character is insufficient to warrant generic separation.
Taxonomic References: Roos (1971); Cairns (1982); Zlatarski and Estalella (1982); Veron (2000a);
Identification Guides: Humann (2002);
