New species of Desmanthus (Porifera, Demospongiae) with a discussion of its ordinal relationships
Author
Van Soest, Rob W. M.
Institute for Systematics and Ecology, University of Amsterdam, P. O. Box 94766, 1090 GT, Amsterdam (The Netherlands) soest @ bio. uva. nl
soest@bio.uva.nl
Author
Hajdu, Eduardo
Nacional, Depto. de Invertebrados, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s / n 20940 - 040, Rio de Janeiro (Brazil) and Centro de Biologia Marinha, Universidade de São Paulo São Sebastião (Brazil) hajdu @ acd. ufrj. br
hajdu@acd.ufrj.br
text
Zoosystema
2000
22
2
299
312
journal article
10.5281/zenodo.5401987
1638-9387
5401987
Lithobubaris leviorum
n. sp.
(
Fig. 3B, C
)
Lithobubaris tenens
– Van Soest & Stentoft 1988: 72, fig. 35 (not:
L. tenens
Vacelet, 1959
)
HOLOTYPE
. —
Off Paynes Bay
.
Barbados
,
216 m
(
ZMA
POR5265
).
ETYMOLOGY. — Named after Claude and Pierrette Lévi in recognition of their contributions towards the elucidation of deep-water sponges.
DISTRIBUTION. —
Barbados
, Caribbean, encrusting dead lithistids and corals in deep water.
DESCRIPTION
Thinly encrusting, round patches on dead corals and lithistid remains, appearing as a “hairy” crust; size several cm
2
. Colour (dry) grey.
Skeleton
Huge single styles erect on a basal interlocked mass of desmas which overlies the substratum. Desmas arranged loosely, zygosis not well-developed. Style bases fit into the circular outcrops of branches of the desmas.
Spicules
Desmas with circular side holes (
Fig. 3B, C
), covered with smoothly rounded swellings and tubercles, dimensions: diameter of desma 150- 200 µm, thickness of branches 20-35 µm, diameter of holes 50-60 µm. Styles, robust, dimensions: only up to 1500 µm in length and 48-63 µm in thickness.
REMARKS
The
Barbados
specimen differs clearly from Mediterranean
L. tenens
in the size of the styles which are about half as short in the longest sizes. In view of the geographic separation it is likely the Caribbean material represents a separate species.