Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean Author Klautau, Michelle Author Lopes, Matheus Vieira Author Tavares, Gabriela Author Pérez, Thierry text Zoological Journal of the Linnean Society 2022 2021-05-06 194 671 725 journal article 20247 10.1093/zoolinnean/zlab014 5cbb504f-e207-44fa-ac62-807a6de2f2db 0024-4082 6354284 3E370CBF-7DD1-4E73-BC37-81BF12EDFEED SOLENEISCUS INTERMEDIUS SP. NOV. ( FIGS 7 , 8 ; TABLE 3 ) Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. org:act: C9AE024F-7E3F-4B46-AD5F-A9E6704B59B8 . Diagnosis: Soleneiscus that grows in the form of ramified tubes at the base and whose skeleton is composed of diactines, rare triactines located only at the oscular region and two types of tetractines. The diactines are thin, maximum thickness of 7.5 µm. Etymology: From Latin intermedium , meaning intermediate, in between, for the close morphological similarity with other species. Type locality: Portail Caves , La Réunion , Indian Ocean . Ty p e m a t e r i a l: H o l o t y p e – U F R J P O R 8 9 3 3 (= 171110 ESB2 TP6 ). Portail Caves , La Réunion , Indian Ocean , coll. T . Pérez, 10 November 2017 , 18– 20 m depth . Colour: Sponge light yellow in life and white in ethanol ( Fig. 7A, B ). Morphology and anatomy: Cormus formed by ramified and erect tubes, ending in a single osculum without a crown ( Fig. 7A, B ). Surface hispid due to the presence of diactines lying perpendicular to the surface ( Fig. 7B ). The lumen of the tubes is also hispid due to the long apical actines of the tetractines ( Fig. 7C, D ). Aquiferous system asconoid. Skeleton composed of diactines, two size categories of tetractines, and rare triactines ( Fig. 8 ).