Igernella notabilis (Duchassaing & Michelotti, 1864),

Van, Rob W. M., 2017, Sponges of the Guyana Shelf, Zootaxa 1, pp. 1-225: 18

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.3511151

persistent identifier

http://treatment.plazi.org/id/03A80010-7746-FFBD-FF14-A07695E5F927

treatment provided by

Plazi

scientific name

Igernella notabilis (Duchassaing & Michelotti, 1864)
status

 

Igernella notabilis (Duchassaing & Michelotti, 1864) 

Figures 9View FIGURE 9 a –c

Euryades notabilis Duchassaing & Michelotti, 1864: 106  , pl. 25 fig.3.

Darwinella joyeuxi Topsent, 1889: 46  , fig. 11; De Laubenfels 1948: 170, fig. 28.

Igernella joyeuxi  ; Topsent 1905, clxxxviii, fig. 3; Boury-Esnault 1973: 287.

Igernella notabilis  ; Van Soest 1978: 76, Pl. XV fig. 1, text-fig. 1; Pulitzer-Finali 1986: 181, fig. 87; Uriz & Maldonado 1996: 154, fig. 2; Lehnert & Van Soest 1998: 97; Moraes 2011: 204, 4 unnumbered figs; Muricy et al. 2011: 55; Rützler et al. 2014: 96 View Cited Treatment .

Material examined. RMNH Por. 9937, Guyana, ‘Luymes’ Guyana Shelf Expedition, station 63, 7.5833°N 57.0667°W, depth 71 m, sandy bottom, 31 August 1970GoogleMaps  .

Description. Lobate conulose sponge, with large apical oscules. The sample contains seven fragments ( Fig. 9View FIGURE 9 a), each about 3 cm high and 1–1.5 cm in diameter ( Fig. 9View FIGURE 9 a1), assumed to be from a single larger specimen. Oscules about 0.5 cm in diameter, conules 2–4 mm apart. Consistency soft, easily torn.

Skeleton. A rectangular spongin reticulation ( Fig. 9View FIGURE 9 b) of thicker ascending fibers (up to 160 µm in diameter), and thinner connecting fibres, up to 60 µm in diameter. Meshes large, 400–1000 µm in size. Fibers laminated and pithed, lightly cored by sand grains and broken spicules. Horny spicules ( Fig. 9View FIGURE 9 c) not common, only triactines were observed, actines 310–700 x 16–25 µm.

Distribution and ecology. Guyana Shelf, Virgin Islands, Mexican Caribbean, Curaçao, St. Eustatius, Puerto Rico, Jamaica, Anguilla, Belize, NE Brazil, mostly on reefs, but also known from the fore reef slope and sandy bottom, 4–71 m depth (previously down to 52 m).

Remarks. The specimens from the Guyana Shelf are closely similar to the type material and other recently described specimens (cf. Van Soest 1978; Uriz & Maldonado 1996). Differences with these specimens are that the present fibers are comparatively thin and there are only few horny spicules. The Cape Verdian species Igernella vansoesti Uriz & Maldonado, 1996  is reported to occur in the Gulf of Mexico ( Uriz & Maldonado 1996) (p. 159), but this needs further verification. The shape of Igernella vansoesti  is clearly different from the present fragments.

RMNH

National Museum of Natural History, Naturalis

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Dendroceratida

Family

Dictyodendrillidae

Genus

Igernella

Loc

Igernella notabilis (Duchassaing & Michelotti, 1864)

Van, Rob W. M. 2017
2017
Loc

Igernella notabilis

Rutzler 2014: 96
Lehnert 1998: 97
Uriz 1996: 154
Pulitzer-Finali 1986: 181
Van 1978: 76
1978
Loc

Igernella joyeuxi

Boury-Esnault 1973: 287
1973
Loc

Darwinella joyeuxi

De 1948: 170
Topsent 1889: 46
1889