Diazona formosa Monniot F. & Monniot C., 1996

Monniot, Françoise & Monniot, Claude, 2001, Ascidians from the tropical western Pacific, Zoosystema 23 (2), pp. 201-383 : 290-291

Diazona formosa Monniot F. & Monniot C., 1996

( Fig. 123D )

Diazona formosa Monniot F. & Monniot C., 1996: 222 , fig. 41, pl. 7E. Type locality: Indonesia.

MATERIAL EXAMINED. — Philippines. West Luzon, Zambales near Masinloc town, Luan Island, 15°29.96’N, 119°54.41’E, 20 m, 2. V.1995 ( MNHN P1 DIA 29). — Cebu, E Mactan Island, wall, 10°15.62’N, 123°59.11’E, 60 m, 18.II.1994 ( MNHN P1 DIA 1). — Bohol Sea, Camiguin Island, N side of White Island, offshore sand cay, 9°15.87’N, 124°39.32’E, 18.IV.1997 ( MNHN P1 DIA 40). — Bohol Sea, Camiguin Island, W side of White Island, offshore sand cay, 9°15.38’N, 124°30.12’E, 19.IV.1997 ( MNHN P1 DIA 45).

REMARKS

These colonies have the same structure as the type colony, and the zooids are exactly similar. There are some differences in the pigment distribution. In the present specimen the lobes of the siphons are marked with six large white patches on the oral siphon and six smaller patches on the cloacal siphon ( Fig. 123D ). There is no pigment accumulation above the neural ganglion or the tip of the endostyle. Some of the transverse branchial vessels are pigmented, as are the dermato-branchial trabeculae. When fixed in formalin, all colours disappear.

Figures

FIG. 123. — A, Atriolum robustum Kott, 1983; B, Leptoclinides madara Tokioka, 1953; C, Leptoclinides subviridis (Sluiter, 1909); D, Diazona formosa Monniot F. & Monniot C., 1996; E, Diazona fungia n. sp.; F, Diazona pedunculata n. sp.