Fusceulima digitalis Hoffman & Engl 2021

Fusceulima digitalis Hoffman & Engl, 2021 Fig. 20I���J Balcis sp. ��� Rol��n Mosquera 1983: 199. Material examined GALICIA BANK ��� 1 sh; 42��41.94��� N, 11��40.58��� W; 744 m; 31 Jul. 2011; BANGAL 0711 V4; MNCN ��� 3 sh; 42��28.81��� N, 11��50.03��� W; 1410 m; 8 Aug. 2011; BANGAL 0711 DR15; MNCN. Remarks This recently described species is very different from any known eulimid in European waters. It is tentatively included in the genus Fusceulima Laseron, 1955, due to its small shell, with few, almost flat whorls, short aperture and curved outer lip (see diagnosis of Fusceulima in Bouchet & War��n 1986, Souza & Pimenta 2014 and Engl et al. 2021). It was described and illustrated for the first time as Balcis sp. by Rol��n Mosquera (1983: 199), from the Galicia Bank. Families Buccinidae Rafinesque, 1815 and Colidae Gray, 1857 Key to species of Buccinidae and Colidae found in the GB (see also Bouchet & War��n 1985) 1. Sculpture conspicuous, with definite spiral ridges........................................................................... 2 ��� Sculpture attenuated, consisting only of fine spiral grooves............................................................ 3 2. Sculpture mostly spiral, shell commonly> 5 cm.......................................................................................................................................................... Troschelia berniciensis (King, 1846) (Fig. 23J���K) ��� Sculpture with conspicuous knobs along the periphery....................................................................................................................................................... Kryptos koehleri (Locard, 1896) (Fig. 23L���M) 3. Protoconch of little more than 1 whorl, with a large nucleus................................................................................................................................................. Colus gracilis (da Costa, 1778) (Fig. 24A���G) ��� Protoconch of more than 2 whorls, with a small nucleus............................................................................................................................................. Colus jeffreysianus (P. Fischer, 1868) (Fig. 24H���K) Remarks There are two species of Colus R��ding, 1798 to be found on GB (Fig. 24), and their correct identification is crucial since they are an important component of the benthic community and food chain. Both have extremely similar shells and their accurate identification relies essentially on the diagnostic character of the protoconch. Colus gracilis is found on the summit platform and the adult is somewhat larger and more solid, whereas C. jeffreysianus has a broad distribution on the deeper part of the slope. Colus aurariae Fraussen, Rosado, Afonso & Monteiro, 2009, described from off Portugal in 200���500 m depth, differs from C. gracilis in having both early whorls and siphonal canal more stretched out; it was not found on GB. Family Cancellariidae Forbes & Hanley, 1851 Key to species of Buccinidae and Colidae found in the GB (see also Bouchet & War��n 1985) 1. Sculpture conspicuous, with definite spiral ridges........................................................................... 2 ��� Sculpture attenuated, consisting only of fine spiral grooves............................................................ 3 2. Sculpture mostly spiral, shell commonly> 5 cm.......................................................................................................................................................... Troschelia berniciensis (King, 1846) (Fig. 23J���K) ��� Sculpture with conspicuous knobs along the periphery....................................................................................................................................................... Kryptos koehleri (Locard, 1896) (Fig. 23L���M) 3. Protoconch of little more than 1 whorl, with a large nucleus................................................................................................................................................. Colus gracilis (da Costa, 1778) (Fig. 24A���G) ��� Protoconch of more than 2 whorls, with a small nucleus............................................................................................................................................. Colus jeffreysianus (P. Fischer, 1868) (Fig. 24H���K) Remarks There are two species of Colus R��ding, 1798 to be found on GB (Fig. 24), and their correct identification is crucial since they are an important component of the benthic community and food chain. Both have extremely similar shells and their accurate identification relies essentially on the diagnostic character of the protoconch. Colus gracilis is found on the summit platform and the adult is somewhat larger and more solid, whereas C. jeffreysianus has a broad distribution on the deeper part of the slope. Colus aurariae Fraussen, Rosado, Afonso & Monteiro, 2009, described from off Portugal in 200���500 m depth, differs from C. gracilis in having both early whorls and siphonal canal more stretched out; it was not found on GB.
Published as part of Gofas, Serge, Luque, ��ngel A., Oliver, Joan Daniel, Templado, Jos�� & Serrano, Alberto, 2021, The Mollusca of Galicia Bank (NE Atlantic Ocean), pp. 1-114 in European Journal of Taxonomy 785 (1) on pages 55-62, DOI: 10.5852/ejt.2021.785.1605, http://zenodo.org/record/5798418
{"references":["Rolan Mosquera E. 1983. Moluscos de la ria de Vigo 1. Gasteropodos. Thalassas 1 (1) Anexo 1: 1 - 383.","Bouchet P. & Waren A. 1986. Revision of the Northeast Atlantic bathyal and abyssal Aclidiidae, Eulimidae, Epitoniidae (Mollusca, Gastropoda). Bollettino Malacologico Supplemento 2: 297 - 576. https: // doi. org / 10.5962 / bhl. title. 140762","Souza L. S. de & Pimenta A. D. 2014. Fusceulima and Halielloides (Gastropoda: Eulimidae) in the southwestern Atlantic, with descriptions of two new species of Fusceulima. Zoologia 31 (6): 621 - 633. https: // doi. org / 10.1590 / S 1984 - 46702014000600008","Bouchet P. & Waren A. 1985. Revision of the Northeast Atlantic bathyal and abyssal Neogastropoda excluding Turridae (Mollusca, Gastropoda). Bollettino Malacologico Supplemento 1: 123 - 296. https: // doi. org / 10.5962 / bhl. title. 140763","Jeffreys J. G. 1878 - 1885. On the Mollusca procured during the H. M. S. \" Lightning \" and \" Porcupine \" expedition. Proceedings of the Zoological Society of London. Part 1 (1878): 393 - 416, pls 22 - 23; Part 2 (1879): 553 - 588 pl. 45 - 46 [October 1879]; Part 3 (1881): 693 - 724, pl. 61; Part 4 (1881): 922 - 952, pls 70 - 71 [1882]; Part 5 (1882): 656 - 687, pls 49 - 50 [1883]. Part 6 (1883): 88 - 115 pls 19 - 20; Part 7 (1884): 111 - 149, pls 9 - 10; Part 8 (1884): 341 - 372, pls 26 - 28; Part 9 (1885): 27 - 63 pls 4 - 6.","Bouchet P. & Waren A. 1993. Revision of the Northeast Atlantic bathyal and abyssal Mesogastropoda. Bollettino Malacologico Supplemento 3: 577 - 840. https: // doi. org / 10.5962 / bhl. title. 140732"]}