WoRMS name details
Topsentia pachastrelloides var. microxata Topsent, 1928
410326 (urn:lsid:marinespecies.org:taxname:410326)
unaccepted (junior synonym)
Variety
marine, brackish, fresh, terrestrial
recent only
Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI. [details] 
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200...
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200 m (type material in the MOM and slides in MNHN). Differences with the typical variety described by Topsent (1892a: 66, pl. IX fig. 3, as Halichondria, from Prince Albert 1er Monaco Cruises Stat. 229, Azores, 38.6667°N 30.5775°W, depth 736 m, type material in MOM and slides in MNHN) are the small size of the smallest oxeas (40–55 vs. 150 μm). Large oxeas are smaller (up to 960 x 25 vs.1400 x 46 μm) than those of the typical variety. These differences may seem sufficient for distinguishing valid taxa, but additional records by other authors and Topsent himself, e.g. Topsent (1928: 163) mention specimens with the smallest oxeas up to 90 μm and the largest up to 1005 x 40–50 μm. He also discussed specimens identified as Topsentia glabra (Topsent, 1898: 234 as Anisoxya), which he observed to overlap in spicule sizes with smaller spicule bearing T. pachastrelloides. In view of the uncertainties admitted by Topsent, and the sympatric occurrence of the varieties Van Soest (2024: 90) proposed to merge these varieties as a single species Topsentia pachastrelloides (Topsent, 1892) until improved evidence has been obtained for a specific distinctness of the varieties. [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. (2024). World Porifera Database. Topsentia pachastrelloides var. microxata Topsent, 1928. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=410326 on 2024-04-24
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original description
Topsent, E. (1928). Spongiaires de l'Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 74:1-376, pls I-XI. [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): 90 [details] Available for editors
[request]
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): 90 [details] Available for editors
[request] 
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
Unknown type MNHN DT 907, geounit Azores [details]
From editor or global species database
Status The variety was described by Topsent from Prince Albert 1er Monaco Cruises Stat. 899, Azores, 37.95°N 29.233°W, depth 200 m (type material in the MOM and slides in MNHN). Differences with the typical variety described by Topsent (1892a: 66, pl. IX fig. 3, as Halichondria, from Prince Albert 1er Monaco Cruises Stat. 229, Azores, 38.6667°N 30.5775°W, depth 736 m, type material in MOM and slides in MNHN) are the small size of the smallest oxeas (40–55 vs. 150 μm). Large oxeas are smaller (up to 960 x 25 vs.1400 x 46 μm) than those of the typical variety. These differences may seem sufficient for distinguishing valid taxa, but additional records by other authors and Topsent himself, e.g. Topsent (1928: 163) mention specimens with the smallest oxeas up to 90 μm and the largest up to 1005 x 40–50 μm. He also discussed specimens identified as Topsentia glabra (Topsent, 1898: 234 as Anisoxya), which he observed to overlap in spicule sizes with smaller spicule bearing T. pachastrelloides. In view of the uncertainties admitted by Topsent, and the sympatric occurrence of the varieties Van Soest (2024: 90) proposed to merge these varieties as a single species Topsentia pachastrelloides (Topsent, 1892) until improved evidence has been obtained for a specific distinctness of the varieties. [details]
