Genus Neopetrosia Laubenfels, 1949

Museums

Regional Maps

• Neopetrosia Laubenfels, M.W. de 1949. Sponges of the Western Bahamas. American Museum Novitates 1431: 1-25 [10 (footnote)].

  Type species:

   Haliclona longleyi de Laubenfels, 1932 by original designation.

Distribution

States

New South Wales, Northern Territory, Queensland, Western Australia

IBRA and IMCRA regions

IMCRA

Timor Transition (1), Christmas Island Province (23), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Northwest Province (4), Northeast Shelf Province (40), Northeast Shelf Transition (41), Central Western Transition (5)

Diagnosis

Compact sponges (Fig. 2A), with an ectosomal unispicular isodictyal layer and free-brushes of oxeas, producing a finely hispid, smooth, ‘velvet-like’ surface (Fig. 2B). Ectosomal skeleton a tangential isodictyal network with one size of spicule (Fig. 2C), 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’ (Fig. 2D, arrow), or a ‘paper-thin area about 1 mm below the surface’ (see de Laubenfels 1953b: 18). Choanosomal skeleton a compact network of irregular paucispicular tracts with rounded meshes, irregular in size. Megascleres: oxeas, less than 200um long.

ID Keys

See Family Petrosiidae Diagnosis.

Diagnosis References

Desqueyroux-Faundez, R. & Valentine, C. 2002. Family Petrosiidae Van Soest, 1980. pp. 906-917 in Hooper, J.N.A. & van Soest, R.W.M. (eds). Systema Porifera: A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 1. [909]

History of changes