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 JANUSYA INDICA SP. NOV. ( FIGS 5 , 6 ; TABLE 2 ) Zoobank registration: urn:lsid:zoobank.org:act: 79DA23AC-B3EE-42B0-8BB3-1DA5F592AF9A . Etymology: Named in reference to the type locality located in the Indian Ocean. Diagnosis: Yellowish to beige Janusya in which the cormus is incrusting to globulose, formed by regular and tightly anastomosed tubes with long, apical, water-collecting tube. The skeleton contains fusiform diactines, trichoxeas, triactines and rare tetractines. Type locality: Passe de l’Hermitage , La Réunion , Indian Ocean . Type material: Holotype – UFRJPOR 8945 (= 171109- PAE2 - TP20 ) . Paratype – UFRJPOR 8932 (= 171109- PAE2 - TP6 ). Passe de l’Hermitage Reef , La Réunion , Indian Ocean , coll. T . Pérez , 9 November 2017 , 18– 20 m depth . A d d i t i o n a l m a t e r i a l e x a m i n e d: U F R J P O R 8 9 3 1 (= 1 7 1 1 0 9- PA E2 -T P 5), U F R J P O R 8 9 4 0 (= 171109-PAE2-TP16). Passe de l’Hermitage Reef, La Réunion , Indian Ocean , coll. T . Pérez , 9 November 2017 , 18– 20 m depth . Colour: Sponge yellowish beige in life ( Fig. 5A, B ) and light brown in ethanol ( Fig. 5C, D ). Morphology and anatomy: Sponge incrusting to globulose ( Fig. 5 ). Cormus clathroid, formed by regular and tightly anastomosed tubes ( Fig. 5 ). One or few apical oscula, surrounded by membrane ( Fig. 5A ). The osculum is a long water-collecting tube, i.e. a larger tube with osculum that receives the water from several other thinner tubes. Underneath the osculum of globulose specimens, there is a cavity that is not lined by a continuous membrane. Cells with yellow granules are present and distributed homogeneously in the mesohyl of the specimens UFRJPOR 8945 and UFRJPOR 8932 ( Fig. 6A, B , respectivelly). The aquiferous system is asconoid and the skeleton is composed of diactines, trichoxeas, triactines and rare tetractines ( Fig. 6C–F ).