Acanthotetilla celebensis
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BibTeX: @article{De2007Zootaxa1397, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="De2007Zootaxa1397">{{Citation |
Ordo: Spirophorida
Familia: Tetillidae
Genus: Acanthotetilla
Name
Acanthotetilla celebensis De, Nicole J., 2007 – Wikispecies link – Pensoft Profile
- Acanthotetilla celebensis De, Nicole J., 2007, Zootaxa 1397: 26-28.
Materials Examined
Material examined.Holotype RMNH POR. 2877, Indonesia, North Sulawesi, Bunaken Islands SW, Likuan I, 01º 35.731 'N124 º 46.129 'E; 14 m., coll. N.J. de Voogd, #MD 17 / 220502 /137, 2205 2002.
Description
Description. Shape: semiglobular, hemispherical, cavernous inside. Size of the holotype is 10 x 12 cm. Surface: hispid bristly, a thin layer of sand covers the surface, obscuring oscules. Only a single porocalyx was observed. Texture: tough, hard, incompressible. Colour: yellow, creamyellow in spirit
Oxeas Protriaenes Shaft Clads Anatriaenes Shaft Clads Acanthoxeas Sigmaspires A. hemisphaerica 3100–3812–4400 Burton, 1959 24–29.9–35 1000–1920–2520 30–38–56 6–10–14 6–8–10 1260–1450–1600 55–70–80 9–9.5–10 9 325–372–414 40–46.4–60 9–11–13A. enigmatica 2200–2960–3800 Lévi, 1964 14–25.1 –30 2000–2500–3000 50–68–95 9 9 3000 50–70 211–225.8–244 16–19.5–23 8–9.6–11A. seychellensis I.1400–1516–1680 Thomas, 1973 34–37.8–47 II.740–1138–1260 6–10.9–14 360–907–1880 20–38–50 1.5–2.5–4 1.5–3–4– –212–278.4–322 4–8–9 8–10.3 –12A. gorgonosclera 770–1216–1600 Van Soest, 1977 3–13.2–17 1260–1377–1540 41–63–81 4–5.3 – 9 3–4.1–7– 42–53–64 5–5.5–6 4–5–6 228–281.1–371 9–13.1–16A. celebensis 1763–1923–2123 sp. nov. 20–31–33 1248 40–45–50 7 34 1977 45–52–60 22 4–4.5–5I. 300–405–442 20–25–33 II. 199–257–284 10–15–17 8–10–12 Skeleton. The peripheral skeleton shows cortical specialization conforming to the description of the type species as presented in the Systema Porifera, i.e. consisting of a dense palisade of megacanthoxeas, visibly macroscopically by a white outerzone. The skeleton is radiate, composed of oxeas, rare very thin anatriaenes and even rarer protriaenes intermingled with megacanthoxeas protruding the surface. The skeleton is less dense interiorly, with megacanthoxeas and sigmaspires as the main spicules present.
Spicules. Megascleres: Large smooth oxeas: 1923 (1763–2132) x 31 (20–33) µm. Protriaenes: 1248 x 7 µm (cladi 45 x4.5 µm). Anatriaenes: 1977 x 22 µm (cladi 52 x4.5 µm). Two size categories of thickly spined curved megacanthoxeas with spines arranged in irregular whorls; I 405 (300–442) x 25 (20 x 33) µm; II 257 (199–284) x 15 (10–17) µm. Microscleres: Abundant microspined sigmaspires: 10 (8– 12) x 1.5 (1–2) µm Ecology. Reef wall at a depth of 14 m. Geographic distribution. Only recorded from the type locality
Etymology
Etymology. Named after the island of Sulawesi, formerly known as Celebes.
Taxon Treatment
- De, Nicole J.; Van, Rob W. M.; 2007: Acanthotetilla celebensis sp. nov., a new species from North Sulawesi, Indonesia (Porifera: Demospongiae: Spirophorida: Tetillidae), Zootaxa 1397: 26-28. doi
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