Raspailia (Raspaxilla) bouryesnaultae, a new name for Brazilian Raspaxilla elegans BouryEsnault, 1973 (Demospongiae, Poecilosclerida, Raspailiidae) with a redescription and a new record
Author
Lerner, Cléa
Author
Carraro, João L.
Author
Soest, Rob Van
text
Zootaxa
2006
1129
37
45
journal article
10.5281/zenodo.171860
e99b3d1d-50b0-484e-9ad7-b8645a73cb21
11755326
171860
Raspailia (Raspaxilla) bouryesnaultae
n.n.
Raspaxilla elegans
BouryEsnault, 1973
: Campagne de la Calypso au large des côtes atlantiques de l’Amérique du Sud (
1961–1962
). I, 29. Spongiaires.
Rés. sci. Camp. Calypso
10: 278, fig.29; pl.II, 4 (not
Raspailia elegans
Lendenfeld, 1887
as
Anthorochalina
, cf.
Hooper & Wiedenmayer,1994
)
Remark. We tried unsuccessfully to contact the present curator of MNHN, Paris, in order to examine the
holotype
. The presence of a slide from the
holotype
(previously obtained through the courtesy of Prof. Lévi, now retired) in ZMA allows the comparison between our material and that described by
BouryEsnault (1973)
.
Studied material.
Brazil
, Santa Catarina state: Coral Island. (
27°56’00’’S
48°32’30’’W
),
12m
depth,
08/III/2001
, MCNPOR 5058, coll. C. Lerner
Slide from
Holotype
of
Raspaxilla elegans sensu
BouryEsnault,1973
.
Brazil
, Rio de Janeiro: MNHN D.NBE 1032 [ZMA Por. 17585].
FIGURE 1.
Map of Coral Island, Santa Catarina State coast, Brazil showing the collecting area.
Description of studied material (figs. 2–3). Arborescent growth form with secondary smaller ramifications arising from larger main branches. The main branches measures
5.5– 9.7 cm
in length. The structure of the sponge is supported by a small peduncle that measures
2.2 cm
diameter. Surface hispid, velvety. Consistency firm and flexible. Bright yellow colour in situ and dark orange in alcohol.
Skeleton (figs. 4–5). Axial plumoreticulated skeleton made by styles. Axial bundles go from basal region towards the apex of each ramification of sponge body and protrude outwards. Extraaxial skeleton plumoreticulated and complemented by the presence of bundles of anisoxeas in the ectosome. Acanthose rhabdostyles echinating bundles of styles and distributed through peripheral skeleton.
Spicules (figs. 6–10; tab.I). Megascleres are long, smooth and curved styles in a single category. Auxiliary megascleres are short acanthose rhabdostyles and thin anisoxeas; the latter restricted to the ectosomal region.
Distribution. From 22º12’S/40º59’W |
to |
27°56’S/48°32’W |
in southeastern Brazil. A |
presumably third record of this species |
is |
from the coast of |
Sao Paulo State (Hajdu, |
unverified internet record). |
FIGURES 2–3.
Raspailia (Raspaxilla) bouryesnaultae
n.n. (MCNPOR 5058). 2. Underwater photography. Scale bar=2 cm; 3. Photography of preserved material. Scale bar=2 cm.
FIGURES 4–10.
Raspailia (Raspaxilla) bouryesnaultae
n.n. (MCNPOR 5058). 4. Detail of the extraaxial skeleton. Scale bar=150 m; 5. Longitudinal section of the plumoreticulate axial skeleton. Scale bar=500 m; 6. Morphological variation of styles. Scale bar=100 m; 7. Morphological variation of acanthose rhabdostyles. Scale bar=10 m; 8. Echinating acanthose rhabdostyle. Scale bar= 50 m; 9. Anisoxea. Scale bar=50 m; 10. Anisoxeas (small spicules) and styles (big spicules). Scale bar=100 m.
TABLE I.
Spicular micrometric data for specimens of
Raspailia (Raspaxilla) bouryesnaultae
n.n. Measurements are given as ranges of length / width (MNHN D.NBE 1032) (N=25), or as smallest lengthmean lengthlargest length/smallest widthmean widthlargest width (MCNPOR5058) (N=100), all in micrometers.