* Diversidoris aurantionodulosa Rudman, 1987 Figure 9H

Material examined.

One specimen 30 mm, SI.

Ecology.

Found upon its pink host sponge, Darwinella sp., at deeper reef and pinnacle sites, and in muck habitats. Depth 12-30 m.

Distribution.

Red Sea (Yonow 2015), South Africa, Tanzania, Australia, and Hong Kong (Gosliner et al. 2008). Here representing a first record for Thai waters

Remarks.

This species was mistakenly identified as Ardeadoris averni (Rudman, 1985) by Mehrotra and Scott (2016) based on limited photographic data. Specimens found several years after initial second-hand observations have permitted reidentification, leaving A. averni remaining currently unrecorded in Thai waters.