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WoRMS name detailsHymedesmia (Ectyodesmia) mutabilis var. costata Topsent, 1928
240473 (urn:lsid:marinespecies.org:taxname:240473)
unaccepted (status change)
Variety
marine,
recent only
Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. [Atlantic and Mediterranean sponges from the cruises of Prince Albert I of Monaco]. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI.
page(s): 260-264 [details] 
Type locality contained in Azores Canaries Madeira
type locality contained in Azores Canaries Madeira [details]
Status The variety was described by Topsent for three specimens from two stations of Prince Albert 1er taken near the Azores,...
Status The variety was described by Topsent for three specimens from two stations of Prince Albert 1er taken near the Azores, Stat. 3150 and 3293, the first from 38.0167N 25.35°W at 1740 m depth, indicated by Topsent as the type (not identified, but presumably in MOM with a slide in MNHN). Topsent listed spicular differences with the typical variety Hymedesmia (H.) mutabilis (Topsent, 1904: 166 as Hymeraphia, collected from the Azores, Prince Albert 1er cruises Stat. 597, 702 and 899, with that of Stat. 702 chosen as the type, 39.3556°N 31.098°W, depth 1326 m, type registration number not identified, but it is presumably in MOM with a slide in MNHN). The specimen from Stat. 899 was reassigned to the present variety by Topsent (1928: 261). The spicular differences with the typical variety were notably the ornamented shaft of the arcuate isochelae (smooth in the typical variety) and the stylote or mucronated shape of the tornotes (smooth tylotes in the typical variety). Since the specimens were collected from the same general area in the deeper North Atlantic near the Azores, Van Soest (2024: 68) proposed to elevate the present variety to a distinct species Hymedesmia (Hymedesmia) costata Topsent, 1928. [details]
de Voogd, N.J.; Alvarez, B.; Boury-Esnault, N.; Cárdenas, P.; Díaz, M.-C.; Dohrmann, M.; Downey, R.; Goodwin, C.; Hajdu, E.; Hooper, J.N.A.; Kelly, M.; Klautau, M.; Lim, S.C.; Manconi, R.; Morrow, C.; Pinheiro, U.; Pisera, A.B.; Ríos, P.; Rützler, K.; Schönberg, C.; Turner, T.; Vacelet, J.; van Soest, R.W.M.; Xavier, J. (2025). World Porifera Database. Hymedesmia (Ectyodesmia) mutabilis var. costata Topsent, 1928. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=240473 on 2025-05-09
Date action by
Nomenclatureoriginal description
Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. [Atlantic and Mediterranean sponges from the cruises of Prince Albert I of Monaco]. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI.
page(s): 260-264 [details] basis of record Van Soest, R.W.M. (2024). Correcting sponge names: nomenclatural update of lower taxa level Porifera. <em>Zootaxa.</em> 5398(1): 1-122., available online at https://doi.org/10.11646/zootaxa.5398.1.1 page(s): 68 [details] Available for editors  [request] Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
Unknown type MNHN DT 1275, geounit Azores Canaries Madeira [details]
From editor or global species database
Status The variety was described by Topsent for three specimens from two stations of Prince Albert 1er taken near the Azores, Stat. 3150 and 3293, the first from 38.0167N 25.35°W at 1740 m depth, indicated by Topsent as the type (not identified, but presumably in MOM with a slide in MNHN). Topsent listed spicular differences with the typical variety Hymedesmia (H.) mutabilis (Topsent, 1904: 166 as Hymeraphia, collected from the Azores, Prince Albert 1er cruises Stat. 597, 702 and 899, with that of Stat. 702 chosen as the type, 39.3556°N 31.098°W, depth 1326 m, type registration number not identified, but it is presumably in MOM with a slide in MNHN). The specimen from Stat. 899 was reassigned to the present variety by Topsent (1928: 261). The spicular differences with the typical variety were notably the ornamented shaft of the arcuate isochelae (smooth in the typical variety) and the stylote or mucronated shape of the tornotes (smooth tylotes in the typical variety). Since the specimens were collected from the same general area in the deeper North Atlantic near the Azores, Van Soest (2024: 68) proposed to elevate the present variety to a distinct species Hymedesmia (Hymedesmia) costata Topsent, 1928. [details]
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