Neopetrosia proxima ( Duchassaing & Michelotti, 1864 )

Ugalde, Diana, Fernandez, Julio C. C., Gómez, Patricia, Lôbo-Hajdu, Gisele & Simões, Nuno, 2021, An update on the diversity of marine sponges in the southern Gulf of Mexico coral reefs, Zootaxa 5031 (1), pp. 1-112 : 40

publication ID

https://doi.org/ 10.11646/zootaxa.5031.1.1

publication LSID

lsid:zoobank.org:pub:CC3A59D1-E09E-407E-93F4-4796FD3D7C19

DOI

https://doi.org/10.5281/zenodo.5495457

persistent identifier

https://treatment.plazi.org/id/110587B3-4D2C-4836-FF53-FBD74FA93283

treatment provided by

Plazi

scientific name

Neopetrosia proxima ( Duchassaing & Michelotti, 1864 )
status

 

Neopetrosia proxima ( Duchassaing & Michelotti, 1864) View in CoL

Tables 6, 7; Figs. 33A–C View FIGURE 33 , 45A–B View FIGURE 45

Synonymy and references: Thalysias proxima Duchassaing & Michelotti (1864: 84) , and van Soest et al. (1983: 198); Densa araminta , Neofibularia proxima and Xestospongia próxima : see references compiled in Muricy et al. (2011: 106); Neopetrosia proxima, Muricy et al. (2011: 106) , Santos et al. (2016: 336), Pérez et al. (2017: 10), van Soest (2017: 35), and Vicente et al. (2019: 8).

Type locality. St. Thomas .

Material examined. CNPGG-2376, CNPGG-2264 Banco Pera reef (20.72669°N, - 91.93481°W), 20 m depth, coll. Oscar Bocardo, 15 September 2017.

Description. Habit elongate or massive. The size of the specimen with an elongate habit (CNPGG-2264, Fig. 45A View FIGURE 45 ), ca. 20 × 6 × 2 cm. The larger massive specimen (CNPGG-2376, Fig. 45B View FIGURE 45 ), ca. 20 ×10 × 2 cm. Surface microhispid and undulated. Oscules are slightly aligned (elongate specimen) or scattered (massive specimen). Color in vivo pale orange, pinkish-beige, or brownish-beige preserved in ethanol. The consistency is hard but friable.

Skeleton. Ectosome is not easily detachable, and the tangential skeleton shows a rounded mesh; ca. 150–200 µm in diameter ( Fig. 33A View FIGURE 33 ). Choanosome with a similar skeleton arrangement to the ectosomal skeleton. The choanosomal region with wide channels; up to 1500 µm width ( Fig. 33B View FIGURE 33 ).

Spicules. Megascleres: Oxeas, slightly curved ( Fig. 33C View FIGURE 33 ); 132– 147 (10)–165/7– 9.2 (1.3)–12 µm.

Distribution. Mexico (current records), US (Florida); other countries in the Caribbean Sea, Guyana, and Brazil ( van Soest 2017).

Remarks. Only two species of Neopetrosia have been reported in the northern GoM, N. carbonaria and N. subtriangularis ( Rützler et al. 2009) . N. subtriangularis has been also reported in the southern section of the GoM (e.g., Green 1977; Green et al. 1986; Gómez 2007). Neopetrosia proxima has also been reported in Guyana by van Soest (2017). Our study is the first record of N. proxima for the GoM, since it has not been recorded in any recent revision study of sponges from the region ( Gómez 2007; Rützler et al. 2009; Ugalde et al. 2015).

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