Neopetrosia proxima (Duchassaing & Michelotti, 1864),

Van, Rob W. M., 2017, Sponges of the Guyana Shelf, Zootaxa 1, pp. 1-225: 35

publication ID

http://doi.org/ 10.5281/zenodo.272951

publication LSID

lsid:zoobank.org:pub:6D68A019-6F63-4AA4-A8B3-92D351F1F69B

DOI

http://doi.org/10.5281/zenodo.3511153

persistent identifier

http://treatment.plazi.org/id/03A80010-7775-FF8E-FF14-A00E930AF857

treatment provided by

Plazi

scientific name

Neopetrosia proxima (Duchassaing & Michelotti, 1864)
status

 

Neopetrosia proxima (Duchassaing & Michelotti, 1864) 

Figures 21View FIGURE 21 a –d

Thalysias proxima Duchassaing & Michelotti, 1864: 84  , pl. VIII figs 2–3.

Densa  araminta De Laubenfels, 1934: 14.

Neofibularia proxima  ; Wiedenmayer 1977: 147.

Xestospongia  sp. Collette & Rützler 1977: 309 (cf. Zea 1987: 117).

Xestospongia proxima  ; Van Soest et al. 1983: 198; Zea 1987: 116, pl. 9 figs 3–4, text-fig. 34; Lehnert & Van Soest 1996: 77; Rützler et al. 2000: table 2.

Neopetrosia proxima  ; Santos et al. 2016: 336 View Cited Treatment , figs 4–5.

(Not: Neopetrosia proxima sensu Campos et al. 2005: 13  , figs 8A –D; Mothes et al. 2006: 670 = Neopetrosia sulcata Santos, Sandes, Cabral & Pinheiro, 2016  ).

Material examined. RMNH Por. 9878, Suriname, ‘ Snellius O.C.P.S. ’ Guyana Shelf Expedition, station G7, 7.28°N 56.7933°W, depth 64 m, bottom sand, 7 May 1966GoogleMaps  .

Description. Thick repent lobes ( Fig. 21View FIGURE 21 a), with punctate, optically smooth but finely irregular surface. Size about 5 x 2 x 2 cm. Oscules flush, scattered over the surface. Color (in alcohol) brown. Consistency hard, incompressible.

Skeleton. At the surface ( Fig. 21View FIGURE 21 b), the skeletal reticulation is thoroughly confused with smaller and larger meshes. The interior ( Fig. 21View FIGURE 21 c) is densely spiculous, with vague thick tracts (up to 200 µm in thickness) forming an irregular alveolar reticulation.

Spicules. Oxeas only.

Oxeas ( Fig. 21View FIGURE 21 d), robust, curved, usually with sharp points, 149– 167 –182 x 6 – 8.4 –9.5 µm.

Distribution and ecology. Guyana Shelf, Virgin Islands, Porto Rico, Colombian Caribbean, Jamaica, Belize, NE Brazil, from shallow-water down to 94 m depth ( Guyana Shelf 64 m).

Remarks. According to the various descriptions, this seems a variable species. The present material appears quite similar to Zea’s (1987) specimens from the Caribean coast of Colombia. It is clearly dissimilar in shape, skeleton and spicule size to material described from Brazil by Campos et al. (2005) under this name, but this was recently referred to a different species, Neopetrosia sulcata Santos, Sandes, Cabral & Pinheiro, 2016  . N. proxima  is nevertheless present in Brazil according to Santos et al. 2016.

There is some resemblance in shape to Neopetrosia dutchi Van Soest, Meesters & Becking, 2014  , which has likewise lobes with flush oscules and a dense skeleton. The spicules of that species are distinctly longer and thicker (165–264 x 11–18 µm) and the oscules are up to 1.5 cm diameter.

RMNH

National Museum of Natural History, Naturalis

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Petrosiidae

Genus

Neopetrosia

Loc

Neopetrosia proxima (Duchassaing & Michelotti, 1864)

Van, Rob W. M. 2017
2017
Loc

Neopetrosia proxima

Santos 2016: 336
2016
Loc

Xestospongia proxima

Lehnert 1996: 77
Zea 1987: 116
Van 1983: 198
1983
Loc

Neofibularia proxima

Wiedenmayer 1977: 147
1977
Loc

Xestospongia

Zea 1987: 117
Collette 1977: 309
1977
Loc

Densa

De 1934: 14
1934