A New Sponge, Antho (Acarnia) seogwipoensis (Poecilosclerida: Microcionidae) from Korea

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  • ABSTRACT

    A new marine sponge, Antho (Acarnia) seogwipoensis n. sp., of the family Microcionidae, was collected from Seogwipo-si, Jeju-do, Korea, about 100 m in depth using a gill net on 1969. The genus Antho Gray, 1867 including Demospongiae, Poecilosclerida, Microcionidae, is a large group of sponges. About 100 species in Antho were reported from worldwide. The genus Antho contains five subgenera: Antho, Acarnia, Isopenectya, Jia, and Plocamia. Among them, about 30 species in Acarnia were described in world sponge. A new sponge’s body shape is branching, size up to 124 mm wide, 213 mm high, 3-8 mm thick in branch and 7-9 mm thick in stalk. Antho (Acarnia) seogwipoensis n. sp. is similar to A. (A.) novizelanicum Ridley and Duncan, 1881 based on their spicules type and skeletal structure, but differs in the spicules dimension and growth form. This new species is branched growth form and have three kinds of toxa.


  • KEYWORD

    Porifera , Poecilosclerida , Microcionidae , Antho , new species Jeju Island , Korea

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  • [Fig. 1.] Antho (Acarnia) seogwipoensis n. sp. A, Entire animal; B, Ectosomal skeletal structure; C, Choanosomal skeletal structure; D, Magnification of choanosomal skeletal structure; E, Thick style; F, Head of thick style with spines; G, Slender style; H, Head of slender style with spines. Scale bar: A=25 mm.
    Antho (Acarnia) seogwipoensis n. sp. A, Entire animal; B, Ectosomal skeletal structure; C, Choanosomal skeletal structure; D, Magnification of choanosomal skeletal structure; E, Thick style; F, Head of thick style with spines; G, Slender style; H, Head of slender style with spines. Scale bar: A=25 mm.
  • [Fig. 2.] Antho (Acarnia) seogwipoensis n. sp. A, Acanthostrongyle; B, End of acanthostrongyle; C, Front view of palmate isochela; D, Side view of palmate isochela; E, Large toxa; F, End of large toxa; G, Middle toxa; H, Small toxa.
    Antho (Acarnia) seogwipoensis n. sp. A, Acanthostrongyle; B, End of acanthostrongyle; C, Front view of palmate isochela; D, Side view of palmate isochela; E, Large toxa; F, End of large toxa; G, Middle toxa; H, Small toxa.
  • [Table 1.] The comparison of characters between Antho (Acarnia) seogwipoensis n. sp. and A. (A.) novizelanicum
    The comparison of characters between Antho (Acarnia) seogwipoensis n. sp. and A. (A.) novizelanicum