Oceanapia stalagmitica ( Wiedenmayer, 1977 )

Neto, Carlos Santos, Nascimento, Elielton, Cavalcanti, Thaynã & Pinheiro, Ulisses, 2018, Taxonomy of Oceanapia Norman, 1869 (Demospongiae: Haplosclerida: Phloeodictyidae) from the Brazilian coast, Zootaxa 4455 (2), pp. 363-376: 373-374

publication ID

https://doi.org/10.11646/zootaxa.4455.2.6

publication LSID

lsid:zoobank.org:pub:2B4688E2-A4C1-4A3F-849F-9BC657DBD9EC

persistent identifier

http://treatment.plazi.org/id/A61F8787-FF80-4457-F6F8-FF75FDCAFE0A

treatment provided by

Plazi

scientific name

Oceanapia stalagmitica ( Wiedenmayer, 1977 )
status

 

Oceanapia stalagmitica ( Wiedenmayer, 1977) 

Figures 7–8View FIGURE 7View FIGURE 8, Table 1

Biminia stalagmitica Wiedenmayer, 1977  : p. 124–125, pl. 26 fig. 1, text-figs 133–134 ( Bahamas) Oceanapia stalagmitica  ; Lehnert & Van Soest, 1996: p. 78, figs 17, 32, 78–81 ( Jamaica)? Oceanapia cf. stalagmitica  ; Van Soest, 2017: p. 46–48, figs 29a–g ( Guyana and Suriname)

Material examined. UFPEPOR 2240, Pará State, Brazil, coll. Piatam Project (2008). 

External morphology ( Fig. 7A–B View Figure ). Spherical sponge, 11– 9 cm (height x width). Inhalant fistulae (0.5–3.3 x 0.2–0.6 cm, height x width), some anastomosed, forming structures with fused channels. The surface is irregular with a detachable cortex; consistency is firm and compressible. Colour when preserved (ethanol 80%) is white, unknown in life.

Skeleton ( Fig. 7C–D View Figure ). Ectosomal skeleton as a compact crust of bundles of fibers, forming multispicular meshes crosslinked by a subisodictial reticulation. Choanosomal skeleton is an irregular reticulation with multispicular bundles forming circular meshes (433– 679.93 –1233 µm), smaller towards the surface.

Spicules ( Fig. 8 View Figure ). Oxeas (113– 146.8 –167 / 3– 4.8 –6 µm): robust, smooth, slightly curved and sharply pointed ( Fig. 8A View Figure ). Sigmas (19– 27.2 –35 µm): thin, smooth and angular ( Fig. 8B View Figure ). Toxas (19– 28.8 –37 µm): sharp-angled, robust and smooth ( Fig. 8C View Figure ).

Distribution and ecology. The specimen was collected in the North region, Pará State coast, Brazil ( Fig. 1 View Figure ).

Remarks. Having been recorded only in the Caribbean, this is the first record of the species for the Brazilian coast. The region where the specimen was found is close to the Amazon River mouth. The Brazilian specimen is similar to the original description of Wiedenmayer (1977). Recently, Van Soest (2017) recorded Oceanapia cf. stalagmitica  for Guyana and Suriname, but its spicule complement is quite distinct from the species studied here; it has larger oxeas and toxas ( Table 1).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Phloeodictyidae

Genus

Oceanapia

Loc

Oceanapia stalagmitica ( Wiedenmayer, 1977 )

Neto, Carlos Santos, Nascimento, Elielton, Cavalcanti, Thaynã & Pinheiro, Ulisses 2018

2018
Loc

Biminia stalagmitica

Wiedenmayer 1977

1977