Known only from Papua New Guinea and Vanuatu.
UPPER: Holotype and Paratype specimens, 13,6mm long preserved. Milne Bay, Papua New Guinea, April 1982. PHOTO: N. Coleman.
LOWER: Espiritu Santo Is., Vanuatu, 20 mm long. PHOTO: Vinka Stenhouse.
Previously known only from the original two specimens from Papua New Guinea, it is reported below from Vanuatu.
Superficially very similar in colour to Glossodoris atromarginata it differs in having scattered brown blotches over the mantle, and whitish gills lined with black or dark brown. There is also a submarginal bluish band around the mantle edge. The radula of this species is quite unusual, the innermost tooth in each halfrow having a wide spade-like blade which gives the species its name. Both photos seem to show animals feeding on the same species of sponge.
• Rudman, W.B. (1986) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: the genus Glossodoris Ehrenberg (=Casella, H.& A. Adams). Zoological Journal of the Linnean Society, 86: 101-184.
Rudman, W.B., 1999 (November 20) Glossodoris paladentatus Rudman, 1986. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/glospala