Spirastrella sp (4689) - Marquises - Ua Pou

Spirastrella sp. (OTU QM4689) OTU QM4689

Hadromerida Spirastrellidae

External characters

burrowing, with single fistules protruding above sandy substrate.

Colour

mustard yellow in life; mustard yellow in ethanol.

Skeletal Characters

Oscules apical to fistules.
Texture firm, brittle, fragile; fistules very fragile.
Surface_Ornamentation mottled, areolate pattern observed in live specimens, but not visible after preservation; fistules flattened longitudinally, as if pressed; internal structure of fistule walls cavernous.
Ectosomal_Skeleton continuous palisade of smaller tylostyles.
Choanosomal_Skeleton dense, confused mass of larger megascleres; lacunose skeletal structure; microscleres scattered throughout.
Megascleres tylostyles: 2 size classes.
Microscleres spirasters: 2 size classes.
Mudmap_Author P Sutcliffe
Mudmap_Editor Kathryn Hall

Distribution

In French Polynesia: Marquesas archipelago

Ecology and habitat

In shelly sand medium.

P Sutcliffe (2012). QM4689 Spirastrella 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).