Neopetrosia De Laubenfels, 1949

Sandes, Joana, Rocha, Lívia, Pinheiro, Ulisses & Santos, George Garcia, 2023, New records of Neopetrosia carbonaria (Lamarck, 1814) from the Brazilian coast reveal new morphological features and spicule types, Zootaxa 5264 (3), pp. 429-439 : 430-431

Genus Neopetrosia De Laubenfels, 1949

Diagnosis. Compact sponges, with an ectosomal unispicular isodictyal layer and free brushes of oxeas, producing a finely hispid, smooth, ‘velvet-like’ surface. Ectosomal skeleton a tangential isodictyal network with one size of spicule, spongin and spicule brushes only at nodal points, free spicules abundant. Consistency hard, stony, spongin always scarce. Subdermal region with short spicular tracts, limited by a second surface skeleton layer (‘peripheral condensation’), or a paper-thin area about 1 mm below the surface. The choanosomal skeleton is a compact network of irregular paucispicular tracts with rounded meshes, irregular in size. Megascleres: oxeas, less than 200 μm long ( Desqueyroux-Faúndez & Valentine 2002).

Type species. Haliclona longleyi De Laubenfels, 1932 (by original designation).