Genus Endectyon Topsent, 1920
Taxonomic Decision for Subgeneric Arrangement
- Hooper, J.N.A. 1991. Revision of the family Raspailiidae (Porifera: Demospongiae), with descriptions of Australian species. Invertebrate Taxonomy 5(6): 1179-1418 [1284]
- Hooper, J.N.A., Lehnert, H. & Zea, S. 1999. Revision of Aulospongus and other Raspailiidae with rhabdostyles (Porifera: Demospongiae: Poecilosclerida). Memoirs of the Queensland Museum 43(2): 649-707 [660]
- Hooper, J.N.A. 2002. Family Raspailiidae Hentschel, 1923. pp. 469-510 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. [485]
Distribution
States
Northern Territory, Queensland, Western Australia
Extra Distribution Information
Atlantic Ocean and Indian Ocean.
IMCRA
Timor Transition (1), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Northwest Province (4), Northeast Shelf Province (40), Northeast Shelf Transition (41), Central Western Transition (5)
Distribution References
Diagnosis
Prominently hispid, conulose surface, and typically arborescent growth forms. Skeleton always with marked axial and extra-axial differentiation of skeleton; axial skeleton with well developed spongin fibres forming compressed reticulation, cored by stout choanosomal styles; extra-axial subectosomal skeleton radial or plumose, with multi- or paucispicular tracts of long subectosomal styles (subgenus Endectyon) or choanosomal styles (subgenus Hemectyon), sometimes connected by unispicular tracts forming hexagonal meshes, usually protruding through surface. Ectosomal skeleton varies from typical raspailiid condition, with thin ectosomal styles grouped in brushes around protruding subectosomal styles (subgenus Endectyon), to surface brushes composed of subectosomal styles only (nominal genus Basiectyon), to brushes of acanthostyles surrounding choanosomal styles (subgenus Hemectyon). Erect brushes of echinating acanthostyles located on outer margin of axial skeleton, surrounding boundary between extra-axial and axial regions, or forming plumose brushes along length of extra-axial tracts, or localised exclusively to base of sponge (nominal genus Basiectyon). Structural megascleres smooth styles of 2–3 size categories; echinating megascleres modified acanthostyles and/or acanthostrongyles with peculiar strongly curved (clavulate) hooks on shaft, base, and/or apex. Microscleres absent.
ID Keys
See Family Raspailiidae Diagnosis.
Diagnosis References
Hooper, J.N.A. 2002. Family Raspailiidae Hentschel, 1923. pp. 469-510 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. [483]
General References
Wiedenmayer, F. in Hooper, J.N.A. & Wiedenmayer, F. 1994. Porifera. pp. 1-620 in Wells, A. (ed.). Zoological Catalogue of Australia. Melbourne : CSIRO Australia Vol. 12 xiii 624 pp. [Date published 21/Nov/1994] (Ectyon Gray, 1867 was established as masculine with Ectyon sparsus (see Wiedenmayer, F. 1977. Shallow-water Sponges of the Western Bahamas. Basel : Birkhäuser (Experientia Suppl. 28) 287 pp. 43 pls. [128]). This over-rules the decision by Topsent, E. 1920. Spongiaires du Musée zoologique de Strasbourg. Monaxonides. Bulletin de l' Institut Océanographie de Monaco 381: 1–36 [27] to take Hemectyon neuter as in Hemectyon hamatus (Schmidt, 1870). Consequently, the genera Endectyon, Hemectyon and Basiectyon are masculine and species endings must be changed accordingly)
History of changes
| 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) |