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

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: 365-366

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-FF88-4458-F6F8-FCD0FDB0F9B6

treatment provided by

Plazi

scientific name

Oceanapia hechteli
status

nom. nov.

Oceanapia hechteli  nom. nov.

Figure 2 View Figure , Table 1

Adocia  sp. Hechtel, 1976: p. 240 (Pernambuco State, Brazil). 

Rhizochalina nodulosa Hechtel, 1983  : p. 65, fig. 5–6 (Pernambuco State, Brazil).

Oceanapia nodulosa  ; Santos et al. 2002: p. 396 (Pernambuco State, Brazil); Muricy et al. 2011: p. 109.

Not Oceanapia nodulosa ( Topsent, 1928)  (a valid species).

Material examined: UFPEPOR 3172, off Recife Municipality (08°06’02’’S 34°42’07’’W), Pernambuco State, Brazil, depth 30 m, dredge, st. 129, Recife expedition, 5 April 1967.GoogleMaps 

Comparative material: YPM 5705View Materials (Holotype), Recife , Pernambuco State, Brazil, depth 27 m, det. Hechtel (1983) (Photographs of the specimen, choanosome and spicules). 

External morphology ( Fig. 2A View Figure ). Semispherical sponge, 9.3 x 6.2 cm (length x width). The specimen has nine fistulae, about 0.2–0.6 x 0.2–0.5 cm (length x width), distributed throughout the specimen. The surface is rough and hispid; firm consistency and circular oscules present at the top of the fistulae. Colour when preserved (ethanol 80%) is reddish brown, colour in life is unknown.

Skeleton ( Fig. 2B View Figure ). Ectosoma multilayered compact crust of tangential spicules, with multispicular fiber bundles (69– 83.3 –102 µm, diameter). Cross-linked choanosomal skeleton with multispicular tracts (81– 107.7 –125 µm) forming well-defined circular meshes (125– 383.7 –625 µm).

Spicules ( Fig. 2C View Figure ). Oxeas (174– 210.1 –232 / 6– 6.9 –8 µm): curved, smooth, robust and with telescopic tips. Raphidiform oxeas (97 –162.1– 230 / 2.6 µm): smooth, smaller and thinner.

Distribution and ecology. Endemic from Pernambuco State, Brazil ( Hechtel 1976; 1983; Santos et al. 2002; Muricy et al. 2011) ( Fig. 1 View Figure ). This specimen was found over calcareous algae.

Etymology. Named after George Hechtel, the authority who designed Rhizochalina nodulosa Hechtel, 1983  .

Remarks. Hechtel (1983) described the species from a single specimen, the holotype ( YPMAbout YPM 5705), collected in Pernambuco State. We found a topotype specimen (UFPEPOR 3172), described herein. This specimen and the holotype have very similar features; both have a semispherical body with small fragmented fistulae. Their spicule complement of oxeas and its dimensions are similar (see Table 1).

About the homonymy Oceanapia nodulosa, Topsent (1928)  described from the Azores a new species, Phloeodictyon nodulosum  . Hechtel (1983) described the new species Rhizochalina nodulosa  without observing that Van Soest (1980) had already proposed the genus Rhizochalina  and Phloeodictyon  as synonyms of Oceanapia  . According to the International Code of Zoological Name ( ICZN 1999: 52.2) the name Oceanapia nodulosa ( Hechtel, 1983)  should be rejected. Oceanapia hechteli  nom. nov. is herein proposed as a replacement for Oceanapia nodulosa ( Hechtel, 1983)  homonym of Oceanapia nodulosa ( Topsent, 1928)  .

......continued on the next page References: (1) Hechtel (1983); (2) Topsent (1928); (3) Wiedenmayer (1977); (4) De Laubenfels (1934); (5) Lehnert & Van Soest (1999); (6) Campos et al. (2005); (7) Topsent (1904); (8) Schmidt (1870); (9) Van Soest (2017); (10) Lévi (1969); (11) De Weerdt & Van Soest (1986); (12) Topsent (1892); (13) Schmidt (1880); (14) Carter (1882); (15) George & Wilson (1919); (16) Zea (1987); (17) Van Soest & Sass (1981); (18) Bowerbank (1866).

YPM

Peabody Museum of Natural History

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Phloeodictyidae

Genus

Oceanapia

Loc

Oceanapia hechteli

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

2018
Loc

Rhizochalina nodulosa

Hechtel 1983

1983
Loc

Oceanapia nodulosa (

Topsent 1928

1928