Neopetrosia subtriangularis ( Duchassaing, 1850 )

Campos, Maurício, Mothes, Beatriz, Eckert, Rafael, Van, Rob W. M. & Soest, 2005, Haplosclerida (Porifera: Demospongiae) from the coast of Maranhão State, Brazil, Southwestern Atlantic, Zootaxa 963, pp. 1-22 : 15-17

publication ID

https://doi.org/ 10.5281/zenodo.171251

DOI

https://doi.org/10.5281/zenodo.6266916

persistent identifier

https://treatment.plazi.org/id/03BD87BA-BA1D-B00A-9B04-770A04906471

treatment provided by

Plazi

scientific name

Neopetrosia subtriangularis ( Duchassaing, 1850 )
status

 

Neopetrosia subtriangularis ( Duchassaing, 1850) View in CoL

Figs. 9 View FIGURE 9 A–D

Spongia subtriangularis Duchassaing, 1850: 26 .

Xestospongia subtriangularis View in CoL ; Wiedenmayer, 1977: 113, pl. XIV, Figs. 1–5, text­Fig. 128; Van Soest, 1980: 71, Fig. 26, pl. XII, Fig. 2 View FIGURE 2 ; Zea, 1987: 114, Fig. 33, pl. IX, Fig. 2 View FIGURE 2 ; Lehnert, 1993: 46, Fig. 71–73; Lehnert & Van Soest, 1998: 92.

Further synonymy: see Wiedenmayer (1977),Van Soest (1980) and Zea (1987).

Examined material. MCNPOR 5340, 72 m, 00°22’N – 44°52’W, 18.VII.2001; MCNPOR 5003, 94 m, 00°35’12”S – 43°20’55”W, 14/VI/1999 (fragment deposited in ZMAPOR 17915).

Material studied for comparison. Xestospongia subtriangularis ( Duchassaing, 1850) ZMAPOR 9995 St. John, Virgin Isl. (fragment deposited in MCNPOR 2601).

Description. Thick ramose fragments ( Fig. 9 View FIGURE 9 A). Dimensions of bigger fragment (MCNPOR 5003): 7.5 cm long, 2.0 cm width, 2.8 cm height. Smooth surface. Oscules conspicuous, 0.15–0.6 cm in diameter. Preserved material with hard consistency, violet colour on the surface and light brown in the inner part.

Skeleton. Ectosome uni­ to multispicular network, with triangular to polygonal meshes 80–280 µm in diameter ( Fig. 9 View FIGURE 9 B), tracts 10–90 µm thickness. Choanosome with radial channels 200–440 µm in diameter ( Fig. 9 View FIGURE 9 C); multispicular primary ascending tracts (up to 15 spicules) 40–60 µm in diameter, with uni to plurispicular secondary interconnecting tracts, 20–70 µm thickness, rectangular and triangular meshes 80–250 µm in diameter.

Spicules. Oxeas ( Figs. 9 View FIGURE 9 D). slightly curved, with acerate ends, blunt to conical, simple or stepped. Mesurements: 60– 156. 7 –230 / 2.5– 3. 3 –6.3 µm (MCNPOR 5340); 73.6– 150. 6 –200 / 3.5– 4. 8 –6.9 µm (MCNPOR 5003).

Remarks. With our new record for the Brazilian coast, this appears to be another widespread species in the West Atlantic. The measurements of the oxeas are closely related to N. p roxima; however, the ascending primary tracts in the choanosome are unlike N. proxima skeletal features.

Distribution. West Atlantic: Florida to Colombia (Van Soest, 1980; Zea, 1987; Lehnert, 1993). Brazilian coast: Maranhão State (present study).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

SubOrder

Haplosclerina

Family

Petrosiidae

Genus

Neopetrosia

Loc

Neopetrosia subtriangularis ( Duchassaing, 1850 )

Campos, Maurício, Mothes, Beatriz, Eckert, Rafael, Van, Rob W. M. & Soest 2005
2005
Loc

Xestospongia subtriangularis

Soest 1998: 92
Lehnert 1993: 46
Zea 1987: 114
Soest 1980: 71
Wiedenmayer 1977: 113
1977
Loc

Spongia subtriangularis

Duchassaing 1850: 26
1850
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