Loxosomella almugnecarensis n. sp. (Entoprocta: Loxosomatidae) — a new sponge epizoite from the Iberian Mediterranean Sea
Author
Figueroa, Manuel Tierno De
Author
Sánchez-Tocino, Luis
text
Zootaxa
2009
2236
65
68
journal article
10.5281/zenodo.190445
d8ac27a0-53ed-4ba4-8bcc-a35f3105b541
1175-5326
190445
Loxosomella almugnecarensis
n. sp.
(
Figs 1
A, B; 2A)
Material examined.
Holotype
:
26.01/5 and
paratype
26.01/6, deposited in the Invertebrate Collection of Museo Nacional de Ciencias Naturales, Madrid,
Spain
. A second
paratype
is deposited in the Departamento de Biología Animal, Universidad de
Granada
(
Granada
,
Spain
). All individuals of the new species were collected on
Hyrtios collectrix
at Punta del Vapor, Almuñécar (
Granada
,
Spain
) on
10 May 2005
.
Type
locality.
Punta del Vapor, Almuñécar,
Granada
,
Spain
.
Etymology.
The species is named for the locality, Almuñécar, where it was collected.
Description.
Individuals small (
Fig. 1
);
holotype
400 µm long in life, comprising calyx length of 250 µm (calyx width 200 µm) and peduncle length 150 µm (peduncle width 55 µm); foot length 152 µm, foot width (including lateral expansions) 105 µm. Peduncle length was measured as distance between basal end of calyx (at minimum width) and basal end of foot.
Holotype
and
paratype
biometry data given in Table 1.
|
TABLE 1.
Measurements (in
|
µm) |
of three |
live specimens |
of
Loxosomella almugnecarensis
|
(* |
holotype). |
| Specimen |
1* |
2 |
3 |
| Total length |
400 |
370 |
430 |
| Calyx length |
250 |
230 |
250 |
| Calyx width |
200 |
180 |
190 |
| Stalk length |
150 |
140 |
170 |
| Stalk width |
55 |
60 |
60 |
| Calyx length/stalk length |
1.6 |
1.6 |
1.5 |
| Calyx length/calyx width |
2.0 |
2.1 |
2.3 |
FIGURE 1.
Loxosomella almugnecarensis
Drawings
depicting the live holotype in frontal view (A) and in dorsal view (B). Scale bars: 100 µm.
Tentacle number
10 in
all studied individuals (
holotype
and
paratypes
); tentacle length of fixed animal (
paratype
) ca. 75 µm.
Calyx longer than wide, widest near upper side of stomach (coinciding with conspicuous lateral expansions or wings) gradually narrowing towards upper part and towards stout stalk. No conspicuous gland cells observed in calyx. Stalk shows randomly arranged epithelial cells.
Gonads yellow, spherical, situated above lateral parts of stomach. Stomach pentagonal, slightly wider than long, pointed basally.
Foot with rounded lateral wings slightly narrower at their base. Main foot gland spherical. Middle groove of foot clearly lined by glandular cells on both sides. Sometimes a lateral bud at level of lateral expansion of calyx; it can reach a considerable size relative to adult. Bud on
holotype
208 µm total length, 104 µm calyx width, 125 µm calyx length.