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 GENUS JANUSYA GEN. NOV. Zoobank registration: urn:lsid:zoobank.org:act: 7F1DD58A-C896-4DF1-9DDC-817B4D30E400 . Type species: Janusya indica sp. nov. Etymology: The new genus is dedicated to Jean Vacelet, who is affectionately known as Janus, in recognition for all his work on Porifera, including calcareous sponges. Diagnosis: Calcinea in which the cormus comprises a typical clathroid body. A stalk may be present. The skeleton contains regular (equiangular and equiradiate) or subregular triactines and tetractines. Tetractines are less abundant than triactines, sometimes even rare, but they always have needle-like apical actines. Diactines may be added. The aquiferous system is asconoid.