Arturia tenuipilosa
species of sponge
Arturia tenuipilosa is a species of calcareous sponge from South India and Sri Lanka. The name refers to the very thin, hair-like oxea present in this species.
Description
Sponge forming massive, reticulate colonies of asconoid tubes, closely resembling Clathrina ceylonensis but somewhat coarser. Here and there on the surface of the colony the tubes converge to unite in small, prominent true vents. The tubes themselves are about 0.5 mm in diameter and they form a close reticulation without any pseudoderm. The colour in alcohol is pale grey. There are three kinds of spicules: regular triradiates, quadriradiates and very slender, hair-like oxea.
The regular triradiates have rather stout, slightly fusiform rays, bluntly and rather abruptly pointed at the apex, which is often somewhat irregular. The rays measure about 0.1 mm in length by 0.012 mm in diameter at the thickest part.
The quadriradiates are abundant and resemble the triradiates, but with an apical ray projecting at right angles into the gastral cavity.
The public source identifies “Arturia tenuipilosa” as species of sponge. This brief keeps that definition visible, then builds a research path around Arturia, tenuipilosa and species.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jun 25, 2026. The linked authority identifier is Q61477551. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Arturia tenuipilosa” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.