Thorecta sp (2075) - Tuamotu - Rangiroa

Thorecta sp. (OTU QM2075) OTU QM2075

Dictyoceratida Thorectidae

External characters

Ranging from thin cylindrical digits erect on the substrate to globular or tubular digits completely attached to the substrate.

Colour

Grey, grey-brown to khaki brown alive; grey in etoh.

Skeletal Characters

Oscules Small, on apex of surface or digits, with raised oscular lip that collapses in air.
Texture Fibrous, spongy, tough, difficult to tear.
Surface_Ornamentation Conulose, minutely reticulated surface pattern, membranous opaque in air.
Ectosomal_Skeleton Detritus packed surface forms a distinct "skin" visible to the naked eye. All detail of ectosome is obscured by the density of the detritus.
Choanosomal_Skeleton Primary fibres are cored with some detritus. Fibres form large rectangular mesh. Occasionally secondary fibres have also incorporated detritus. Mesohyl is moderately dense and granular.
Megascleres nil.
Microscleres nil.
Mudmap_Author P Sutcliffe
Mudmap_Editor J Hooper

Distribution

In French Polynesia: Tuamotu archipelago

Ecology and habitat

In the lagoon, on pinnacles, in coral sand.

P Sutcliffe (2007). QM2075 Thorecta sp. In: Hall, K.A. & Hooper, J.N.A. (2014) SpongeMaps: an online community for taxonomy and identification of sponges. (Available at http://www.spongemaps.org).