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Porifera name details

Myxilla rosacea var. japonica Ridley & Dendy, 1887

195619  (urn:lsid:marinespecies.org:taxname:195619)

 unaccepted (subgenus assignment and status change)
Variety
marine, brackish, fresh, terrestrial
recent only
Ridley, S.O.; Dendy, A. (1887). Report on the Monaxonida collected by H.M.S. 'Challenger' during the years 1873-76. <em>Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology.</em> 20 (part 59): i-lxviii, 1-275, pl. 1-51, 1 map., available online at http://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-59/README.htm
page(s): 130-131 [details]  OpenAccess publication 
Type locality contained in Central Kuroshio Current, Japanese Exclusive...  
type locality contained in Central Kuroshio Current [details]
type locality contained in Japanese Exclusive Economic Zone [details]
Status The variety was erected by Ridley & Dendy from Kobe, Japan, 34.62°N 135.23°E, depth 15–92 m (syntypes (fragments) BMNH...  
Status The variety was erected by Ridley & Dendy from Kobe, Japan, 34.62°N 135.23°E, depth 15–92 m (syntypes (fragments) BMNH 1887.5.2.111). It differs from the typical variety described by Lieberkühn (1859: 520, as Halichondria, from Triest, Northern Adriatic, approximate coordinates 45.683°N 13.6°E, neotype LMJG 15293, cf. Van Soest 2002c: 611) in the more densely spined choanosomal acanthostyles and the hastate condition of the ectosomal tornotes, which differs from the tridentate endings in the typical variety. Anchorate isochelae were cited in one size, whereas the typical variety has two size categories (12–15 and 20–25 μm), but Ridley & Dendy may have ignored the categories as they state the chelae are ‘up to about 30 μm’ covering the size of the two categories of the typical variety. Sigmata are slightly larger (up to 45 μm, only 17-35 μm in the typical variety). The tornote endings are a sure sign that the present variety is not a member of the North Atlantic Myxilla (Myxilla) rosacea, and accordingly Van Soest (2024: 72) proposed to recognize Myxilla (Myxilla) japonica (Ridley & Dendy, 1887) as a distinct species. Lindgren (1897, 1898) reported this variety (as Dendoryx) from Strait Hirundo (=Hirado), Japan, 33.0833°N 129.2667°E. His description is meagre. Hoshino (1977: 7; 1981a: 140) described Japanese specimens of a ‘cosmopolitan’ Myxilla rosacea (Lieberkühn, 1859) without illustration. In Hoshino (1981), he only listed the name, but synonymized the present variety with his M. rosacea. Van Soest (2024) suspect that his material likely belongs to an additional Japanese Myxilla species, as the descriptions and sizes of the spicules differ substantially from both North Atlantic Myxilla rosacea and the present variety. [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. Myxilla rosacea var. japonica Ridley & Dendy, 1887. Accessed at: https://www.marinespecies.org/porifera/porifera.php?p=taxdetails&id=195619 on 2024-03-29
Date
action
by
2005-12-18 15:00:44Z
created
2007-06-01 18:04:47Z
changed
2018-01-25 21:03:03Z
changed
2024-01-26 09:50:06Z
changed

original description Ridley, S.O.; Dendy, A. (1887). Report on the Monaxonida collected by H.M.S. 'Challenger' during the years 1873-76. <em>Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology.</em> 20 (part 59): i-lxviii, 1-275, pl. 1-51, 1 map., available online at http://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-59/README.htm
page(s): 130-131 [details]  OpenAccess publication 

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): 72 [details]  Available for editors  PDF available [request] 

additional source Hoshino, T. (1981). Shallow-Water Demosponges of Western Japan, 1. <em>Journal of Science of the Hiroshima University (B).</em> 29 (1): 47-205.
page(s): 140 (listed only) [details]  OpenAccess publication 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Status The variety was erected by Ridley & Dendy from Kobe, Japan, 34.62°N 135.23°E, depth 15–92 m (syntypes (fragments) BMNH 1887.5.2.111). It differs from the typical variety described by Lieberkühn (1859: 520, as Halichondria, from Triest, Northern Adriatic, approximate coordinates 45.683°N 13.6°E, neotype LMJG 15293, cf. Van Soest 2002c: 611) in the more densely spined choanosomal acanthostyles and the hastate condition of the ectosomal tornotes, which differs from the tridentate endings in the typical variety. Anchorate isochelae were cited in one size, whereas the typical variety has two size categories (12–15 and 20–25 μm), but Ridley & Dendy may have ignored the categories as they state the chelae are ‘up to about 30 μm’ covering the size of the two categories of the typical variety. Sigmata are slightly larger (up to 45 μm, only 17-35 μm in the typical variety). The tornote endings are a sure sign that the present variety is not a member of the North Atlantic Myxilla (Myxilla) rosacea, and accordingly Van Soest (2024: 72) proposed to recognize Myxilla (Myxilla) japonica (Ridley & Dendy, 1887) as a distinct species. Lindgren (1897, 1898) reported this variety (as Dendoryx) from Strait Hirundo (=Hirado), Japan, 33.0833°N 129.2667°E. His description is meagre. Hoshino (1977: 7; 1981a: 140) described Japanese specimens of a ‘cosmopolitan’ Myxilla rosacea (Lieberkühn, 1859) without illustration. In Hoshino (1981), he only listed the name, but synonymized the present variety with his M. rosacea. Van Soest (2024) suspect that his material likely belongs to an additional Japanese Myxilla species, as the descriptions and sizes of the spicules differ substantially from both North Atlantic Myxilla rosacea and the present variety. [details]

Synonymy Hoshino (1981: 140) synonymized this variety with Myxilla rosacea without discussion, citing M. rosacea. as a cosmopolitan species. [details]


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