On the taxonomic status of Holothuria (Holothuria) tubulosa (s. s.) from the Algerian coast with the description of a new Mediterranean species, Holothuria (Holothuria) algeriensis n. sp. (Echinodermata: Holothuroidea: Holothuriidae)
Author
Mezali, Karim
Protection, Valorization of Coastal Marine Resources and Molecular Systematics Laboratory. Department of Marine Science and Aquaculture. Faculty of Natural Sciences and Life. Abdelhamid Ibn Badis University-Mostaganem, PO Box 227, Route nationale N ° 11, Kharrouba, 27000, Mostaganem, Algeria.
Author
Thandar, Ahmed S.
School of Life Sciences, University of KwaZulu-Natal, P / Bag X 54001, Durban 4000, South Africa.
Author
Khodja, Ihcene
text
Zootaxa
2021
2021-06-03
4981
1
89
106
journal article
5927
10.11646/zootaxa.4981.1.4
fcb42055-1ae9-4705-b471-a6b9ab150e33
1175-5326
4897620
C86B7AAB-F7D3-4ED0-9C81-F141416F6118
Holothuria
(
Holothuria
)
stellati
Delle Chiaje, 1824
Figure 4C
,
Table 4
Material examined.
UF5468
,
Sidi-Fredj
,
Algeria
,
36°45.000’N
,
2°50.000’E
,
0.5–10 m
, Summer 2006,
1 spec.
UF5495
,
Stidia
,
Algeria
,
35°49.922’N
,
0°1.174’O
,
3 m
, Summer 2006,
1 spec.
LPVCMRMS2020.208,
Ouillis
,
Algeria
,
36°7.436’N
,
0°15.219’E
,
5 m
,
June 2020
,
1 spec.
Description.
Body dark brown dorsally (
Figure 4
Ca), light brown ventrally (
Figure 4
Cb); sometimes reaching a length of
30 cm
and width of
5–6 cm
. Dorsal surface arched, ventral surface flattened, the latter with fairly dense, scattered pedicels. Integument thick (
0.70 µm
) and smooth. A row of 5–6 very large, straight pointed protuberances separated at equal intervals on both sides of body. Cuvierian tubules absent. Collar around mouth thick (about
3.50 mm
).
Ossicles
. Body wall tables with circular disc (
Figure 4
Cc) with wavy outline and 4 large central and 4 small peripheral perforations. Buttons (
Figure 4
Ce) of several
types
: (i) oval with irregular, rough, smooth and thick surfaces; (ii) larger ones slightly rectangular in shape, with smooth but sometimes with wavy outline; (iii) enlarged, rounded ones and (iv) those that are slightly warped in the middle. Perforated plates of the pedicels of
two types
: enlarged and elongated (
Figure 4
Cd). Tentacles with straight (
Figure 4
Cf) or slightly arched rods.