Amphimedon paraviridis Fromont, 1993

Putra, Singgih Afifa, Ambo-Rappe, Rohani, Jompa, Jamaluddin & de Voogd, Nicole J., 2024, Preliminary study of marine sponges (Porifera) in the littoral of Spermonde Archipelago, Indonesia, ZooKeys 1208, pp. 275-313 : 275-313

Amphimedon paraviridis Fromont, 1993

Fig. 10

Diagnostic features.

Encrusting and soft, with small oscula and scattered ostia on the surface. Pale green in life and turning brown in alcohol. Skeleton isotropic reticulation arranged by oxeas 155–194 (173.5) × 5.9–8.1 (7.2) µm. Amphimedon paraviridis has similarities with Amphimedon viridis Duchassaing & Michelotti, 1864 from the Caribbean Sea. However, the holotype of A. paraviridis (from the Great Barrier Reef) has thicker spicules, a much greater spongin component, thicker fibers, and larger mesh spaces compared to A. viridis ( Fromont 1993) . Only three species of Amphimedon have been reported from the marine ecoregions of Indonesia ( Putra et al. 2023), including Amphimedon anastomosa Calcinai et al., 2017 , Amphimedon zamboangae (Lévi, 1961) , and Amphimedon denhartogi de Voogd, 2003 .

Distribution and ecology.

Previously reported from Australia ( Fromont 1993). This is first record of Amphimedon paraviridis from Samalona Island, the Spermonde Archipelago. Reef flat, overgrowing another sponge, Clathria (Thalysias) reinwardti Vosmaer, 1880 .

Figures

Figure 10. Amphimedon paraviridis Fromont, 1993 a habitus in situ over growing Clathria (Thalysias) reinwardti Vosmaer, 1880 at Samalona Island, the Spermonde Archipelago (photograph by SAP) b LM image of cross section of the skeleton c oxeas d Isotropic reticulation of oxeas.