Xestospongia kapne Carvalho, Lopes, Cosme & Hajdu, 2016

Rocha, Lívia, Moraes, Fernando, Salani, Sula & Hajdu, Eduardo, 2021, Taxonomy of Petrosiidae Van Soest, 1980 (Haplosclerida, Porifera) from Brazil, Zootaxa 5004 (2), pp. 251-287 : 274

publication ID	https://doi.org/ 10.11646/zootaxa.5004.2.2
publication LSID	lsid:zoobank.org:pub:B1B2F144-2B51-4079-ACB5-6D78B38B32E7
persistent identifier	https://treatment.plazi.org/id/385D87B7-FFB9-F87D-2D94-FB19FF02F947
treatment provided by	Plazi
scientific name	Xestospongia kapne Carvalho, Lopes, Cosme & Hajdu, 2016
status

Treatment

Xestospongia kapne Carvalho, Lopes, Cosme & Hajdu, 2016 View in CoL

Studied material: Holotype, Brazil, off Rio de Janeiro State: MNRJ 13541 View Materials , Caratinga Oil Field (22.623° S, 40.264° W, Campos Basin ), 923 m depth, Col. ROV from the R / V ‘Toisa Conqueror’, 2006.3.12. GoogleMaps

Diagnosis. Massive, robust, barrel- or chimney-shaped (clusters of up to three chimneys), with an irregular contour, up to 50 cm tall, and a large apical pseudo-oscule. Surface with lobular projections and shallow depressions or gaps, and rough texture. Ectosome with a loose reticulation made by the tangentially disposed spicules of the terminal tufts of ascending choanosomal spiculo-fibers, with meshes seen here and there (140–250 μm diam). Cho- anosome a reticulation, clearly visible only in some areas, overlaid by abundant oxeas in confusion. Meshes only seldom observed (200–400 μm diam). Unclear distinction between primary and secondary fibres. Oxeas, relatively robust, usually slightly curved, tapering gradually, 204–301 x 11–14 μm [adapted from Carvalho et al. 2016].

Description. Refer to Carvalho et al. (2016).

Distribution. Provisional Brazilian endemic, so far known only from off the State of Rio de Janeiro (Campos Basin).