Alvania jeffreysi

Alvania jeffreysi (Waller, 1864) (Fig. 4) Material examined. ( more than 250 shells, 154 with soft parts): SPAIN • 1 sPc; 43° 52.823′N, 008° 56.151′W to 43° 52.837′N, 008° 55.597′W; 988– 920 m; 08–15 SeP. 2002; DIVA-Artabria I DRN-1000 • 2 sh; 43° 53.457′N, 008° 48.461′W to 43° 54.000′N, 008° 48.524′W; 629–631 m; 08–15 SeP. 2002; DIVA-Artabria I AT–600 • 1 sh (juv); 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 • 3 sPc + 4 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 • 10 sPc + 10 sh (1 juv); 43° 48.421′N, 008° 51.453′W to 43° 49.160′N, 008° 51.091′W; 599–607 m; 10–20 Sep. 2003; DIVA-Artabria I DRN-600 • 1 sPc; 43° 53.575′N, 008° 56.868′W to 43° 54.015′N, 008° 56.959′W; 965–974 m; 10–20 Sep. 2003; DIVA-Artabria I DRN-1000 • 1 sh; 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 • 1 sh (juv); 43° 42.348′N, 008° 45.889′W to 43° 43.269′N, 008° 45.289′W; 344–354 m; 10–20 SeP. 2003; DIVA-Artabria I EBS-350 • 90 sPc + 20 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 • 3 sh; 43° 51.873′N, 008° 53.683′W to 43° 53.120′N, 008° 53.301′W; 802– 788 m; 10–20 SeP. 2003; DIVA-Artabria I EBS-800 • 2 sPc + 2 sh; 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 SARRIDAL (2006–07) • 2 spc + 11 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 • 5 sPc + 5 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 • 5 sPc + 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 (2006–2007) SARRI-4 • 19 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 • >50 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 • 3 sh; 44° 08.461′N, 009° 04.634′W to 44° 08.607′N, 009° 04.413′W; 917– 896 m; 15–24 Jul. 2008; A SELVA DRN-7-1 • 30 sPc + 70 sh; 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 • 5 sh; 44° 07.309′N, 008° 48.289′W to 44° 07.488′N, 008° 48.047′W; 44° 5–438 m; 15–24 Jul. 2008; A SELVA DRN-11-5 • 1 sPc; 43° 48.511′N, 008° 51.393′W to 43° 49.092′N, 008° 50.959′W; 312–576 m; 15–24 Jul. 2008; A SELVA DRN-30-1 • 1 sPc + 1 sh; 44° 07.495′N, 008° 46.999′W to 44° 07.675′N, 008° 45.225′W; 416– 407 m; 15–24 Jul. 2008; A SELVA AT-11-2 • 1 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 • 7 sPc; 43° 58.84′N, 008° 15.625′W to 43° 59.621′N, 008° 14.285′W; 233–237 m; 15–24 Jul. 2008; A SELVA EBS-20 • 3 sPc (juv); 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 • 2 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. Remarks. It extends from higher latitudes (southeastern Greenland, Iceland, and Scandinavia) southwards to Portugal, usually in 50–500 m (Rodríguez-Babío & Thiriot-Quiévreux 1974; Fretter & Graham 1978; Bouchet & Warén 1993; Warén 1996; Hoffman et al. 2011). The shells studied show the characteristic square reticulate sculpture (Figs. 4a–b). High magnification reveals minute spires and fuzzy growth lines (Fig. 4e). Blunt protoconch with a marked zigzag sculpture (Figs. 4c–d). According to Gofas & Warén (1982) records from the Mediterranean are based on Alvania sororcula GranataGrillo, 1877. Alvania jeffreysi is characterized by the zig-zag sculpture of its protoconch (Figs. 4 c–d), which it shares with some sublittoral Alvania, such as A. zylensis Gofas & Warén, 1982, A. imperspicua (Pallary, 1920) and A. vermaasi van Aartsen, 1975. In the studied samples it was present between 300 and 1000 m, mainly in the range 400–650 m where many shells had remains of the soft parts. It was abundant in the same samples than Alvania cimicoides.
Published as part of 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), pp. 1-45 in Zootaxa 5196 (1) on pages 9-11, DOI: 10.11646/zootaxa.5196.1.1, http://zenodo.org/record/7224080
{"references":["Waller, E. (1864) On a new British species of Rissoa. Annals and Magazine of Natural History, Series 3, 14, 136 - 138. https: // doi. org / 10.1080 / 00222936408681672","Rodriguez-Babio, C. & Thiriot-Quievreux, C. (1974) Gasteropodes de la region de Roscoff. Etude particuliere de la protoconque. Cahiers De Biologie Marine, 15, 531 - 549.","Fretter, V. & Graham, A. (1978) The prosobranch molluscs of Britain and Denmark. Part 4: Marine Rissoacea. Journal of Molluscan Studies, Supplement 6, 153 - 194.","Bouchet, P. & Waren, A. (1993) Revision of the Northeast Atlantic bathyal and abyssal Mesogastropoda. Bolletino Malacologico, Supplement 3, 579 - 840. https: // doi. org / 10.5962 / bhl. title. 140732","Waren, A. (1996) New and little known mollusca from Iceland and Scandinavia. Part 3. Sarsia, 81, 197 - 245. https: // doi. org / 10.1080 / 00364827.1996.10413622","Hoffman, L., van Heugten, B. & Lavaleye, M. S. S. (2011) Gastropoda (Mollusca) from the Rockall and Hatton Banks, northeastern Atlantic Ocean. 3. Miscellanea Malacologica, 5 (2), 23 - 52.","Gofas, S. & Waren, A. (1982) Taxonomie de quelque especes du genre Alvania (Mollusca, Gastropoda) des cotes iberiques et marocaines. Bolletino Malacologico, 18 (1 - 4), 1 - 16,","Pallary, P. (1920) Exploration scientifique du Maroc organisee par la Societ de Geographie de Paris et continuee par la Societ des Sciences Naturelles du Maroc. Deuxieme Fascicule. Malacologie. Larose, Rabat et Paris, 108 pp. https: // doi. org / 10.5962 / bhl. title. 46466","Aartsen, J. J. van (1975) Alvania vermaasi nov. spec. a new species of Gastropod from the Gulf of Algeciras (Spain). Basteria, 39 (3 - 6), 91 - 96."]}