Diazona angulata Monniot & Monniot, 1996

Monniot, Françoise, 2009, Some ascidians from Indonesian marine lakes (Raja Ampat Islands, West Papua), Zootaxa 2106, pp. 13-40 : 31

Diazona angulata Monniot & Monniot, 1996

( Figure 14 )

Diazona angulata Monniot F. & Monniot C., 1996: 217 figs 39 A–D, pl. 7 B; Monniot F. & C. 2001: 290.

Material. Indonesia. West Papua, Gam Island, Danau Nine Gam marine lake, 00° 26.970 ’S – 130 ° 29.149 ’E, 1m, 04/XII/ 2007, coll. L.J. Bell and L.E. Martin, DNG 0 87 ( MNHN P 1 DIA 60). Malaysia. Sabah, Kota Kinabalu, Manukan Island, fringing reef, 05°58.00’N – 115 ° 59.92 ’E, 3m, 26 /X/ 2005, coll Coral Reef Research Foundation, OCDN 9253 R ( MNHN P 1 DIA 58); Sarawak offshore of Sibuti River, 04°03.60’N – 113 ° 41.70 ’E, 10m, 25 /IV/ 2003, OM 915696 -Z (P 1 DIA 56). Papua New Guinea. West New Britain, Dampier Strait, Ritter Island, 05° 31.61 ’S – 148 °06.75’E, 6m, 25 /I/ 2002, CRCHO 540 ( MNHN P 1 DIA 62); Manus, Baluan Island, 02° 32.27 ’S – 147 ° 17.97 ’E, 46m, 22 /VI/ 2003, coll. Coral Reef Research Foundation, CRCHO 563. Vanuatu, Efate, 17 ° 46.85 ’S – 168 ° 15.40 ’E, 18 /XI/ 2000, coll. Coral Reef Research Foundation, CRCHO 471 ( MNHN P 1 DIA 61).

The relaxed zooids are erect above a colourless translucent mass ( Fig. 14 ). The muscles have the same pattern as previously described ( Monniot & Monniot 1996 figs A,B,C). The fibers issuing from the siphons run vertically, the most ventral of them curve to reach the endostyle, the most dorsal extend onto the abdomen. The thorax has a square shape with numerous stigmatal rows. The stomach is elongated with numerous thin longitudinal folds. The anatomical characters are uniform everywhere. D. angulata was previously found in the Philippines, Malaysia and Indonesia.

Figures

FIGURE 14. Diazona angulata.