Correcting sponge names: nomenclatural update of lower taxa level Porifera Author Van Soest, Rob W. M. text Zootaxa 2024 2024-01-09 5398 1 1 122 http://dx.doi.org/10.11646/zootaxa.5398.1.1 journal article 10.11646/zootaxa.5398.1.1 1175-5334 10494167 E233F731-D5FA-4032-B3A4-CEFE5A809C49 Callyspongia rigida Desqueyroux-Faúndez, 1984 ( Figs. 3B–E ) Callyspongia rigida Desqueyroux-Faúndez, 1984: 810 , figs, 25, 182-188. This combination, described by Desqueyroux-Faúndez from Passe de Boulari, New Caledonia , approximate coordinates 22.35°S 166.4333°E , depth 30 m ( holotype MHNG 978/428) is a junior secondary homonym of Euchalina rigida Von Lendenfeld (1887: 817 , no illustration) described from Port Jackson, Australia , approximate coordinates 33.85°S 151.25°E (dried holotype BMNH 1886.8.27.471) when it was transferred to genus Callyspongia Duchassaing & Michelotti (1864) by Hooper & Wiedenmayer (1994: 100) . Callyspongia rigida ( Von Lendenfeld, 1887 ) is currently accepted, but it is here transferred to subgenus Callyspongia (Callyspongia) based on the properties of the type species of Euchalina , i.e. E. typica Von Lendenfeld (1887: 817 , pl, XVIII fig. 5, pl. XXVII fig. 24) (cf. Hooper & Wiedenmayer 1994: 88 ; confirmed in Desqueyroux-Faúndez & Valentine 2002a: 837 ). E. typica is currently a junior synonym of Callyspongia (Callyspongia) nuda ( Ridley, 1884 ) .The present species must be renamed because both homonyms are assigned to the same genus (ICZN art. 59.1). I propose Callyspongia (Cladochalina) desqueyrouxfaundezae nom.nov. named after Ruth Desqueyroux-Faúndez. The subgenus assignment is based on the description and illustrations showing fasciculate primary spicule fibers, characteristic for the subgenus.