Some new data on tropical western Pacific Ascidians Author Monniot, Françoise text Zootaxa 2010 2010-08-09 2561 1 1 29 https://biotaxa.org/Zootaxa/article/view/zootaxa.2561.1.1 journal article 10.11646/zootaxa.2561.1.1 1175-5326 5304193 Lissoclinum timorense ( Sluiter, 1909 ) ( Figures 8D , 12B ) Didemnum timorensis Sluiter 1909: 51 . Lissoclinum timorense : Kott 2001: 328 Fig. 148 AB, 178C–E, without synonymy; 2004: 66. Material. Coll. N.J. Pilcher et al., Viet Nam , Con Dao Isl. , Con Son Isl. , 08°41.12’N – 106°36.80’E , intertidal, 30/VII/2008 0PHG 1736-U ( MNHN A2 LIS 197 ) . The colonies ( Fig. 12B ) are greenish crusts about 2mm thick with a round edge. The common cloacal cavity contains abundant symbiotic algae. The colony surface is raised in small warts filled with spicules. The zooids are small with the oral aperture in a slit, and a wide atrial aperture without languet. Seven stigmata are in the two first rows, 6 to 7 in the third row, and 5 in the last row per side. There is no muscular appendage. The testis is a single vesicle. The larvae are brooded in the basal layer of the colony, the trunk is 0.9mm long with 3 adhesive papillae and 8 ampullae on each side. Both the oozooid and blastozooids show 4 rows of stigmata. The spicules 45µm in diameter ( Fig. 8D ) are star-shaped with rays with a polygonal base, and made of fused rods. They have been compared to Sluiter’s specimen ( ZMA TU 1274): they well correspond in size and shape. This species is very similar in shape, zooids and larvae to L. bistratum . It differs by the spiky colony surface and the spicules. It is distributed in the entire western Pacific.