Holothuria (Roweothuria) arguinensis Koehler & Vaney, 1906

Mezali, Karim, Thandar, Ahmed S. & Khodja, Ihcene, 2021, 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), Zootaxa 4981 (1), pp. 89-106: 96

publication ID

https://doi.org/10.11646/zootaxa.4981.1.4

publication LSID

lsid:zoobank.org:pub:C86B7AAB-F7D3-4ED0-9C81-F141416F6118

DOI

http://doi.org/10.5281/zenodo.4897640

persistent identifier

http://treatment.plazi.org/id/DC769818-FFB1-FFC2-E9A3-FD65F584FB47

treatment provided by

Plazi

scientific name

Holothuria (Roweothuria) arguinensis Koehler & Vaney, 1906
status

 

Holothuria (Roweothuria) arguinensis Koehler & Vaney, 1906  

Figure 4B View FIGURE 4 , Table 4 View TABLE 4

Material examined. CMNI 2021 – 0194, Salamandre , Algeria, 35°55.221’N, 0°03.470’E, 2 m, November 2014, 1 spec. GoogleMaps   LPVCMRMS2020.207, Ouillis, Algeria, 36°7.436’N, 0°15.219’E, 5 m, June 2020, 2 specs GoogleMaps   .

Description. Semi-cylindrical body with dorsal surface ( Figure 4 View FIGURE 4 Ba) arched, dark brown in color; ventral surface ( Figure 4 View FIGURE 4 Bb) sole-like, light brown in color. Several large protuberances in two double rows on the dorsal surface; in addition, dorsal and ventral surfaces separated by several arched protuberances. Anus terminal. Mouth surrounded by 20 tentacles. Cuvierian tubules absent. Collar around mouth thick (about 4.60 mm). Calcareous ring with broad, squarish, radial plates with a shallow anterior notch, almost flat anterior portions and slightly concave posterior margin ( Table 4 View TABLE 4 ).

Ossicles. Body wall tables ( Figure 4 View FIGURE 4 Bc) sometimes with a rectangular disc, spire of straight to slightly arched pillars, parallel to each other. Buttons often shaped in the figure of “8” ( Figure 4 View FIGURE 4 Bd) with rough, irregular and prickly margins but with a smooth surface with unequally-sized perforations. Pedicels also with numerous elongated perforated plates ( Figure 4 View FIGURE 4 Be) and other rare enlarged plates. Rods of tentacles larger and more complex with an enlarged, branched and perforated middle region, arched ( Figure 4 View FIGURE 4 Bf) or straight ( Figure 4 View FIGURE 4 Bg).