Carenzia carinata Jeffreys 1877
Description
Carenzia carinata (Jeffreys, 1877)
(Figs. 4–6)
Synonymy see Quinn (1983a). Complement:
Seguenzia carinata: Rios, 1975: 32 (fig. 102); Rios, 1985: 33 (fig. 139); Rolán, 2005: 49 (fig. 113). Carenzia carinata: Quinn, 1983a: 356 (figs. 1–7); Haszprunar, 1988: fig. 2Q [sensu Kano, 2007]; Rios, 1994: 45 (pl. 14, fig. 153); Gofas et al., 2001: 184; Rios, 2009: 73 (textfig.); Rosenberg et al., 2009: 622; Segers et al., 2009: 5.
Type locality: Valorous station 13, North Atlantic; 56°01’N 34°42’W, 1263 m (Quinn 1983a).
Distribution: Amphi-Atlantic distribution, from the northern end of the Mid-Atlantic Ridge to the Canary Islands and from Florida, USA to the northeastern Brazilian coast; 732–2311 m depth (Quinn 1983a; Rios 2009; Rosenberg et al. 2009).
New occurrence: Southeastern Brazil, from Espírito Santo to Rio de Janeiro, 790–3450 m depth.
Description: Shell small, broadly conical (nearly twice as wide as tall), strongly keeled, relatively thickwalled. Color homogeneous white to cream. Protoconch (~1 whorl) rounded, bulging, with pitted surface; transition visible as orthocline suture. Teleoconch smooth, except for strong spiral cord at periphery forming distinct keel and usually weaker median spiral cord on each whorl; both cords may bear rounded nodules, especially on last two whorls; nodules expanding axially toward adjacent cords, forming faint axial ribs, particularly on first two whorls. Basal portion of body whorl usually smooth, except for 1–2 very thin spiral threads near peripheral keel, and faint axial growth lines. Upper portion of whorls (above median cord) convex, and lower portion concave, resulting in a step-like profile. Suture shallow, but well-marked. Aperture quadrangular, acuminate toward peripheral keel, with strong columellar tooth. Umbilicus wide (1/4–1/5 of shell diameter), deep; umbilical periphery usually rounded and smooth, except for small nodules near the peristome.
Measurements (in mm): 4¾–6¼ whorls, H = 1.8 ± 0.1, D = 3.1 ± 0.9, h = 0.75 ± 0.1, d = 1.0 ± 0.1.
Material examined: Brazil: Espírito Santo: off São Mateus, continental slope of Abrolhos, 18°59’S 37°47’W, 1540–1550 m, MNHN, 34 shells, MZSP 116278, 15 shells (MD55, sta. DC70, 26/v/1987); 19°00’S 37°48’W, 950–1050 m, MNHN, 6 shells, (MD55, sta. DC72, 27/v/1987); 19°01’S 37°47’W, 1500–1575 m, MNHN, 1 shell, (MD55, sta. CB79, 28/v/1987); 19°08’S 37°34’W, 3450 m, MNHN, 2 shells, MZSP 116276, 1 shell (MD55, sta. DS66, 25/v/1987); 19°40’S 37°48’W, 790–940 m, MNHN, 17 shells, MZSP 116275, 9 shells (MD55, sta. CB77, 27/v/1987); Rio de Janeiro: E of Cabo de São Tomé, 21°25’S 39°56’W, 1400–1420 m, MNHN, 5 shells, MZSP 116277, 4 shells (MD55, sta. DS05, 09/v/1987); E of Cabo Frio, 22°50’S 40°15’W, 1835–1872 m, MNHN, 1 shell, (MD55, sta. SY03, 09/v/1987); S of Cabo Frio, 24°12’S 42°15’W, 1555 m, MNHN, 2 shells, (MD55, sta. CB108, 02/vi/1987).
Remarks: This species was reported by Clarke (1961) from the southeastern Atlantic, but this record was considered doubtful by subsequent authors (Laubier & Bouchet 1976; Quinn 1983a). The new records expand the range of this species more than 1,000 km southward, from NE to SE Brazil.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Seguenziidae
- Genus
- Carenzia
- Kingdom
- Animalia
- Order
- Seguenziida
- Phylum
- Mollusca
- Scientific name authorship
- Jeffreys
- Species
- carinata
- Taxon rank
- species
- Taxonomic concept label
- Carenzia carinata Jeffreys, 1877 sec. Salvador, Cavallari & Simone, 2014
References
- Jeffreys, J. G. (1877) New and peculiar Mollusca of the Eulimidae and other families of Gastropoda, as well as of the Pteropoda, procured in the ' Valorous' Expedition. Annals and Magazine of Natural History, 4 (19), 317 - 339. http: // dx. doi. org / 10.1080 / 00222937708682151
- Quinn, J. F. Jr. (1983 a) Carenzia, a new genus of Seguenziacea (Gastropoda: Prosobranchia) with the description of a new species. Proceedings of the Biological Society of Washington, 96 (3), 355 - 364.
- Rios, E. C. (1975) Brazilian Marine Mollusks Iconography. Fundacao Universidade do Rio Grande, Centro de Ciencias do Mar, Museu Oceanografico, Rio Grande, 331 pp.
- Rios, E. C. (1985) Seashells of Brazil. Fundacao Cidade do Rio Grande, Universidade do Rio Grande, Museu Oceanografico, Rio Grande, 328 pp.
- Rolan, E. (2005) Malacological Fauna from the Cape Verde Archipelago. Conchbooks, Heckenheim, 455 pp.
- Haszprunar, G. (1988) On the origin and evolution of major gastropod groups, with special reference to the Streptoneura. Journal of Molluscan Studies, 54, 367 - 441. http: // dx. doi. org / 10.1093 / mollus / 54.4.367
- Kano, Y. (2007) Vetigastropod phylogeny and a new concept of Seguenzioidea: independent evolution of copulatory organs in the deep-sea habitats. Zoologica Scripta, 37 (1), 1 - 21. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.2007.00316. x
- Rios, E. C. (1994) Seashells of Brazil. Universidade do Rio Grande, Rio Grande, 481 pp.
- Gofas, S., Le Renard, J. & Bouchet, P. (2001) Mollusca. In: Costello, M. J., Emblow, C. & White, R. (Eds.), European Register of Marine Species: A Check-List of the Marine Species in Europe and a Bibliography of Guides to Their Identification. Publications Scientifiques du M. N. H. N., Collection Patrimoines Naturels 50, Paris, pp. 180 - 213.
- Rios, E. C. (2009) Compendium of Brazilian Sea Shells. Evangraf, Rio Grande, 668 pp.
- Rosenberg, G., Moretzsohn, F. & Garcia, E. F. (2009) Gastropoda (Mollusca) of the Gulf of Mexico. In: Felder, D. L. & Camp, D. K. (Eds.), Gulf of Mexico: Origins, Waters, and Biota. Biodiversity. Texas A & M University Press, Texas, pp. 579 - 699.
- Segers, W., Swinnen, F. & Abreu, A. (2009) An annotated checklist of the marine molluscs from the archipelagos of Madeira and the Selvagens (NE Atlantic Ocean). Bocagiana, 226, 1 - 60.
- Clarke, A. H. Jr. (1961) Abyssal mollusks from the South Atlantic Ocean. Bulletin of the Museum of Comparative Zoology, 125 (12), 345 - 387.
- Laubier, L. & Bouchet, P. (1976) Un nouveau copepode parasite de la cavite palleale d'un gasteropode bathyal dans le Golfe de Gascogne Myzotheridion seguenziae gen. sp. nov. Archives Zoologie Experimentale et General, 117, (4), 469 - 484.