Didemnum ahu Monniot & Monniot, 1987

(Figures 1A, 2)

Didemnum ahu Monniot C. & Monniot F., 1987: 25, fig. 6 A,B,C, pl. 1E; Monniot F. & Monniot C., 2008: 803 and synonymy.

Material. Indonesia. West Papua, Gam Island, Danau Hidden Gam marine lake, 00°26.959’S – 130°30.071’E, 0m, 10/XII/2007, coll. L.J. Bell and L.E. Martin, DHG 0 50 (MNHN A2 DID C 588); West Papua,Gam Island, Danau Nine Gam marine lake, 00°26.970’S – 130°29.149’E, 0.5m, 03/XII/2007, coll. L.J.

Bell and L.E. Martin, DNG 0 54 (MNHN A2 DID C 586).

The very thin colonies (Fig. 1A) are white with small zooids and small larvae of 0.3mm for the trunk. The spicules are irregular in size and shape, of 30µm for the largest; the fibrous structure of the rays obviously appears. The species was also previously recorded from a marine lake in Palau (Monniot & Monniot 2008).