Australian Biological Resources Study

Australian Faunal Directory

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Genus Hyrtios Duchassaing & Michelotti, 1864

 

Distribution

States

New South Wales, Queensland, South Australia, Tasmania, Victoria


Extra Distribution Information

West Indian region, S Atlantic, Mediterranean Sea, Red Sea, Indian Ocean, W Pacific, Japan, Subantarctic and Antarctic.


IBRA and IMCRA regions (map not available)

IMCRA

Spencer Gulf Shelf Province (33), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Tasmanian Shelf Province (36), Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)

Distribution References

Diagnosis

Upright, tubular or digitate thorectids (Fig. 1D–F) in which both primary and secondary fibres are fully charged with detritus (Fig. 1G–H) to an extent which, in some species, can obscure the stratified nature of the spongin. The primary skeleton can show some fasciculation near the surface. The surface of the sponge always retains a distinctly conulose appearance, despite the presence in some species of extraneous detritus throughout the matrix. Primary fibres terminate in the conules, and as a consequence of the sandy inclusions these can appear whitish against the dark sponge surface. The texture of the sponge ranges from compressible to quite firm, even brittle, reflecting the degree of development of the skeleton, which in some species can be irregular and reduced, and the extent to which matrix debris is accumulated.

 

ID Keys

See Subfamily Thorectinae Diagnosis

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
29-Mar-2018 15-Dec-2011 MOVED
29-Mar-2018 13-Apr-2011 MODIFIED
12-Feb-2010 (import)