Subgenus Hyalonema (Leptonema) Lendenfeld, 1915
- Leptonema Lendenfeld, R. von 1915. XXIX The sponges. 3. Hexactinellida. In Reports on the scientific results of the Expedition to the Eastern Tropical Pacific, in charge of Alexander Agassis, by the U.S. Fish Commission Steamer Albatross, 1904–1905, and of other expeditions of the Albatross, 1891–1899. Memoirs of the Museum of Comparative Zoology, Harvard University 42: 1-397 pls 1-109 [245] [originally proposed as a subgenus of Hyalonema Gray, 1835].
Type species:
Hyalonema (Leptonema) campanula Lendenfeld, 1915 by monotypy.
Distribution
States
Queensland
Extra Distribution Information
Central and E Atlantic, Indian Ocean, Indo-Malayan region, central, E and NE Pacific.
IMCRA
Northern Shelf Province (25), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)
Distribution References
- Ijima, I. 1927. The Hexactinellida of the Siboga Expedition. 1-383 26 pls in Weber, M.W.C. (ed.). Siboga-Expeditie, livr. 106, monogr. 6. Leiden : J.E. Brill. [366]
- Lévi, C. 1964. Spongiaires des zones bathyale, abyssale et hadale. 63-112 pls 2-11 in Wolff, T. (ed.). Galathea Report. Scientific results of the Danish Deep-Sea Expedition Round the World, 1950–1952. Copenhagen : Danish Science Press Vol. 7. [108]
- Topsent, E. 1928. Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert Ier de Monaco. Résultats des Campagnes Scientifiques accomplies par le Prince Albert I. Monaco 74: 1-376 11 pls [97]
Diagnosis
Body is from ovoid (when young) to inverted-conical, funnelor cup-like. The atrial cavity is present or absent in different species. Some species have septas dividing the atrial cavity into several parts. The oscular sieve-plate and the apical cone is present in some species. Choanosomal spicules are diactines and sometimes hexactines. Without ambuncinates. Basalia, when known, are fourtoothed anchors. Prostalia lateralia are pinular diactines known in most species. Dermalia and atrialia are pinular pentactines. The pinular ray is whip-like with short or moderate spines; its rhachis is thickest at base. Hypodermalia and hypoatrialia are pentactines. Amphidiscs are represented by three or rarely two sizes (mesamphidiscs may be absent). They are often similar in shape and hardly differ from each other due to presence of intermediate forms. Macramphidiscs have umbels, usually about 1/2–1/5 as long, and about 1/2–1/6 as broad, as the length of the whole spicule; the shafts are usually covered with spines. Microhexactines are rough, with straight or curved rays (in one species microhexactines are absent, in the other only microstauractines with tree rays short and one long are known).
ID Keys
See Family Hyalonematidae Diagnosis
Diagnosis References
Tabachnick, K. & Menshenina, L. L. 2002. Family Hyalonematidae Gray, 1857. pp. 1232-1263 in Hooper, J.N.A. & Soest, R.W.M. Van (eds). Systema Porifera. A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 2. [1242]
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 29-Mar-2018 | 28-Feb-2012 | MODIFIED | ||
| 29-Mar-2018 | 15-Apr-2011 | MODIFIED | ||
| 12-Feb-2010 | (import) |