|
WoRMS taxon details
original description
Topsent, E. (1916). Diagnoses d'éponges recueillies dans l'Antarctique par le Pourquoi-Pas?. <em>Bulletin du Muséum national d'histoire naturelle, Paris.</em> (1) 22(3): 163-172. page(s): 171-172 [details]
original description
Topsent, E. (1917). Spongiaires. Pp. 1-88, pls 1-6. <em>In: Joubin, L. (Ed.), Deuxième Expédition Antarctique Française (1908-1910) Commandée par le Dr. Jean Charcot.</em> Sciences Physiques: Documents Scientifiques (Paris). 4. (Masson & Cie: Paris). page(s): 81 [details]
additional source
Burton, M. (1929). Porifera. Part II. Antarctic sponges. <em>British Antarctic ('Terra Nova') Expedition, 1910. Natural History Report, London, Zoology.</em> 6 (4): 393-458, pls I-V. page(s): 422 [details]
Unknown type MNHN DT 703, geounit Antarctic Peninsula [details]
Unknown type MNHN DT 703, geounit Antarctic Peninsula [details]
From editor or global species database
Additional information Burton (1932) noted the variable presence of toxa and concluded that these were of no taxonomic significance and therefore Calyx stipitatus Topsent, 1916, which he identified his specimens with, was a junior synonym of Gellius arcuarius Topsent, 1913. He supposed the type specimen of the latter was a small broken piece of a fan. However, Gellius arcuarius, from examination of the type specimen (see Goodwin et al. 2012), is a thin, probably encrusting, species (described by Topsent as 20x12x3mm), which has similar sized toxa (70–110μm) but much larger oxea (350–400 by 12–15μm) and a confused choanosomal skeleton rather than the neat reticulation found in the genus Calyx. It conforms to the current definition of Haliclona (Gellius) and should be reassigned to this genus. In contrast Calyx stipitatus is described as a stalked sub-triangular specieswith prominent oscules and an ectosomal unispicular reticulation of oxea (300–325 by 17μm in description, wemeasured as 232(278)313 by 13(17)22μm in the type) but does not possess toxa. To add to the confusion between these species Desqueyroux-Faúndez & Valentine (2002b) in Fig. 3A depict the holotype RSME1921.143.1419 as a flabellate stalked specimen. [details]
|
| |