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Checked: verified by a taxonomic editorPolymastia nigra Alcolado, 1984 
AphiaID: 170651

Classification: Biota > Checked: verified by a taxonomic editorAnimalia (Kingdom) > Checked: verified by a taxonomic editorPorifera (Phylum) > Checked: verified by a taxonomic editorDemospongiae (Class) > Checked: verified by a taxonomic editorHadromerida (Order) > Checked: verified by a taxonomic editorPolymastiidae (Family) > Checked: verified by a taxonomic editorPolymastia (Genus) > Checked: verified by a taxonomic editorPolymastia nigra (Species)
Status accepted
Rank Species
Parent Checked: verified by a taxonomic editorPolymastia Bowerbank, 1864
Source  original description Alcolado, P.M. (1984). Nuevas especies de esponjas encontradas en Cuba [New species of sponges from Cuba]. Poeyana 271: 1-22 (look up in IMIS[details] [full text]

Environment marine, brackish, fresh, terrestrial
Fossil range recent only
Distribution  Unreviewed: has not been verified by a taxonomic editortype locality Cuba [details]
From editor or global species database
Caribbean Sea
Checked: verified by a taxonomic editorCaribbean Sea [details]
Cuba
Checked: verified by a taxonomic editorCuba [details]
(no group)
Checked: verified by a taxonomic editorGreater Antilles [details]
From other sources
Cuba
Unreviewed: has not been verified by a taxonomic editorCuba [details]
Specimen  Checked: verified by a taxonomic editorHolotype IdO-407, locality Cuba (Havana City, Barlovento, fore reef) [details]
Links Unreviewed: has not been verified by a taxonomic editorTo Encyclopedia of Life 
Unreviewed: has not been verified by a taxonomic editorTo USNM Invertebrate Zoology Porifera Collection 
Notes 
From editor or global species database
Checked: verified by a taxonomic editorDescription The author of this species, Pedro Alcolado, kindly provided an English translation of the original description in the Spanish language, which clarifies some of the uncertainties:
Description. This sponge appears filling crevices in reef bottoms, without protruding markedly. So, it appears as patches with tuberculate surface [PAPILLAE] and oscular chimneys [OSCULAR PAPILLAE] bearing oscules of about 1 cm in diameter. These oscules contract considerably like the rest of the sponge, when extracted from water. The tubercles [PAPILLAE] are hemispherical protubernances of 3-5 mm in diámeter and 2-4 mm in height, which can appear solitary or fused with neighbor ones. Surface color is dark grey, almost black, (thus, its name) and chonaosome is beige. Consistency is very tough and hard as rubber. The ectosome if formed by a dense palisade of tylostiles, comparatively small, with points directed outward. Choanosome is formed by ascending tracts with both big and smal tylostyles. These tracts alternate with hyaline fibers which look alike fungus hyfae, of unknown nature, and to which the sponge possibly owes its toughness. Spicules are [BIG] fusiform subtylostyles of 550-750 x 15-19 ¼m, short robust subtylostyles of 240-455 x 1-8 ¼m, and small thin subtylostyles of 150-480 x 1-8 ¼m. Spherical hyaline bodies (spherules) of 5-11 in diameter were also observed.

Locality. Collected ath the fore-reef of Barlovento (Havana City) at 15 m deep.

Collector. The author

Remarks. In consulted literature species with the above features are not mentioned. Apparently, this genus was not mentioned for the West Indies.

[I have seen this species several times further with paler grey or pruplish grey color in less lit places]

Source of original description:
Alcolado, P. M. (1984). Nuevas especies de esponjas encontradas en Cuba. Poeyana 271: 1-22. [details]

Checked: verified by a taxonomic editorTaxonomy This is an unlikely Polymastia as it lacks the characteristic papillae and also the ectosomal palisade of small tylostyles does not seem to be developed (despite the author's description); the choanosome is peculiarly fibrous/stringy. Boury-Esnault (1987) listed this in a table of Atlantic Polymastia species as 'insufficiently described'. A recent (October 2005) debate about it yielded suggestions it could be Spheciospongia vesparia or Polymastia tenax, but this remains contentious. [details]

From other sources
Unreviewed: has not been verified by a taxonomic editorType locality Cuba [details]
LSID urn:lsid:marinespecies.org:taxname:170651
Taxonomic
Edit history
 
Date   action   by
2005-07-10 18:05:41Z  created  db_admin
2010-05-31 13:43:21Z  checked  van Soest, Rob
  
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  Citation: van Soest, R. (2014). Polymastia nigra Alcolado, 1984. In: Van Soest, R.W.M; Boury-Esnault, N.; Hooper, J.N.A.; Rützler, K.; de Voogd, N.J.; Alvarez de Glasby, B.; Hajdu, E.; Pisera, A.B.; Manconi, R.; Schoenberg, C.; Janussen, D.; Tabachnick, K.R., Klautau, M.; Picton, B.; Kelly, M.; Vacelet, J.; Dohrmann, M.; Díaz, M.-C.; Cárdenas, P. (2014) World Porifera database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=170651 on 2014-11-20
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