Pseudosetia amydralox Bouchet & Warén, 1993

Oliver, Joan Daniel, Gofas, Serge, Urgorri, Victoriano, Díaz-Agras, Guillermo & Templado, José, 2022, Rissoidae gastropods of the outer continental shelf and slope off Galicia (NW Spain), Zootaxa 5196 (1), pp. 1-45 : 27

publication ID

https://doi.org/ 10.11646/zootaxa.5196.1.1

publication LSID

lsid:zoobank.org:pub:1B12892E-D68F-4BFE-8E9A-7F19E220E73D

DOI

https://doi.org/10.5281/zenodo.7224184

persistent identifier

https://treatment.plazi.org/id/03D37947-4874-FFEA-A0B1-FC17426207F7

treatment provided by

Plazi

scientific name

Pseudosetia amydralox Bouchet & Warén, 1993
status

 

Pseudosetia amydralox Bouchet & Warén, 1993 View in CoL

( Fig. 16 View FIGURE 16 )

Material examined. (61 empty shells and 51with soft parts in 22 samples): Smooth form: SPAIN • 2 sh; 43° 47.188′N, 008° 53.053′W to 43° 55.312′N, 008° 53.101′W; 770–842 m; 08–15 SeP. 2002; DIVA-Artabria I AT-800 GoogleMaps 3 spc + 1 sh; 43° 57.030′N, 008° 54.795′W to 43° 57.248′N, 008° 54.133′W; 1191– 1132 m; 08–15 SeP. 2002; DIVA-Artabria I AT-1000 GoogleMaps 1 spc; 43° 48.514′N, 008° 51.439′W to 43° 49.163′N, 008° 51.157′W; 616– 616 m; 10–20 SeP. 2003; DIVA-Artabria I AT-600 GoogleMaps 1 spc; 43° 41.590′N, 008° 45.328′W to 43° 42.396′N, 008° 44.286′W; 301– 301 m; 10–20 Sep. 2003; DIVA-Artabria I EBS-300 GoogleMaps 4 sPc + 2 sh; 43° 48.587′N, 008° 51.402′W to 43° 49.545′N, 008° 51.197′W; 610– 598 m; 10–20 Sep. 2003; DIVA-Artabria I EBS-600 GoogleMaps 1 sPc; 43° 38.812′N, 009° 07.949′W to 43° 39.841′N, 009° 07.405′W; 999–1001 m; 17–28 SeP. 2004; VERTIDOS GA-DRN-1000 GoogleMaps 2 sh; polygon delimited by points 44° 10.000′ N, 009° 00.000′ W /44° 10.000′ N, 008° 35.000′ W/44° 00.000′ N; 009° 00.000′ W/44° 07.000′ N; 008° 35.000′ W; 480–600 m; SARRIDAL (2006–2007) SARRI-2 • 1 sh; Polygon delimited by Points 44° 10.000′ N, 009° 00.000′ W/44° 10.000′ N, 008° 35.000′ W/44° 00.000′ N; 009° 00.000′ W/44° 07.000′ N; 008° 35.000′ W; 417–668 m; SARRIDAL (2006–07) SARRI-3 • 16 sh; 44° 11.652′N, 008° 58.152′W to 44° 11.539′N, 008° 57.574′W; 908–1106 m; 15–24 Jul. 2008; A SELVA DRN-7 GoogleMaps 9 sh; 44° 08.65′N, 008° 55.305′W to 44° 08.771′N, 008° 55.104′W; 581– 566 m; 15–24 Jul. 2008; A SELVA DRN-7 GoogleMaps C • 2 sPc; 44° 09.896′N, 008° 39.581′W to 44° 10.129′N, 008° 39.494′W; 438–459 m; 15–24 Jul. 2008; A SELVA DRN-11 GoogleMaps 1 sPc; 43° 56.478′N, 008° 54.199′W to 43° 55.934′N, 008° 54.849′W; 620–933 m; 15–24 Jul. 2008; A SELVA DRN-15-2 GoogleMaps 2 sPc; 43° 48.252′N, 008° 51.427′W to 43° 49.707′N, 008° 51.164′W; 575–584 m; 15–24 Jul. 2008; A SELVA EBS-30-1 GoogleMaps 1 sh; 43° 34.86′N, 009° 21.95′W to 43° 36.44′N, 009° 20.71′W; 1010–1112 m; 15–30 SeP. 2008; DIVA-Artabria II EBS-04 GoogleMaps 1 sh; 43° 32.5′N, 009° 25.37′W to 43° 33.6′N, 009° 24.5′W; 848–1027 m; 15–30 SeP. 2008; DIVA-Artabria II EBS-05 GoogleMaps 1 sh; 42° 55.76′N, 009° 44.04′W to 42° 55.79′N, 009° 44.57′W; 709–728 m; 15–30 SeP. 2008; DIVA-Artabria II EBS-25 GoogleMaps .

Sculptured form: SPAIN • 25 sPc + 10 sh; 43° 48.587′N, 008° 51.402′W to 43° 49.545′N, 008° 51.197′W; 610– 598 m; 10–20 Sep. 2003; DIVA-Artabria I EBS-600 GoogleMaps 2 sPc; Polygon delimited by Points 44° 10.000′ N, 009° 00.000′ W /44° 10.000′ N, 008° 35.000′ W/44° 00.000′ N; 009° 00.000′ W/44° 07.000′ N; 008° 35.000′ W; 480–600 m; SARRIDAL (2006–2007) SARRI-2 • 3 sPc; Polygon delimited by Points 44° 10.000′ N, 009° 00.000′ W /44° 10.000′ N, 008° 35.000′ W/44° 00.000′ N; 009° 00.000′ W/44° 07.000′ N; 008° 35.000′ W; 417–668 m; SARRIDAL (2006–2007) SARRI-4 • 12 sh; 44° 08.65′N, 008° 55.305′W to 44° 08.771′N, 008° 55.104′W; 581– 566 m; 15–24 Jul. 2008; A SELVA DRN-7 C GoogleMaps • 2 sh; 44° 14.929′N, 008° 30.255′W to 44° 15.367′N, 008° 30.438′W; 2121–2516 m; 15–24 Jul. 2008; A SELVA AT-12 GoogleMaps 6 sPc; 44° 08.516′N, 008° 40.788′W to 44° 09.688′N, 008° 39.721′W; 436– 428 m; 15–24 Jul. 2008; A SELVA EBS-11 GoogleMaps 1 sh; 43° 48.252′N, 008° 51.427′W to 43° 49.707′N, 008° 51.164′W; 575–584 m; 15–24 Jul. 2008; A SELVA EBS-30-1 GoogleMaps .

Remarks. Bouchet & Warén (1993) studied many shells of this species widespread from off northern Spain south to the Canary Islands in 155–1650 m depth range. Gofas (2007) pointed out that Pseudosetia amydralox is quite common on the uppermost part of the Lusitanian seamounts (the type locality is located at Gorringe Seamount, 305–320 m). We found several shells of this species with soft parts in samples from the deep range 300–1100 m mainly in sandy bottoms with phosphorites.

The shells here studied show a remarkable variability, that ranges from practically smooth surface, with regularly convex whorls, lacking suture edges and a peripheral cord on the last whorl ( Figs. 16a, c, e View FIGURE 16 ), to shells with a conspicuous spiral sculpture, with suture edges and a peripheral cord, and plano-convex whorls ( Figs. 16 k, o, n, r, s View FIGURE 16 ). The sculpture of the protoconchs also showed a certain degree of variability ( Figs. 16b, d–j, l, m, p, q View FIGURE 16 ). Not ruling out the possibility of cryptic species, we prefer for now to consider variability of a single species, that due to its geographic location it situated within the range of distribution of P. amydralox instead of that of the smooth Pseudosetia turgida ( Jeffreys, 1870) or the more sculptured Pseudosetia azorica Bouchet & Warén, 1993 .

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