Famelica mirmidina Dautzenberg & Fischer 1896

• Main Authors: Figueira, Raquel Medeiros Andrade, Absalão, Ricardo Silva
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Raphitomidae; Famelica; Famelica mirmidina; Ricardo; Sudeste; Northeast Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5632944; https://zenodo.org/record/5632944

Famelica mirmidina Dautzenberg & Fischer, 1896 (Figs. 3–4) Pleurotoma mirmidina Dautzenberg & Fischer, 1896: 413, pl. XVII, fig. 13; Dautzenberg & Fischer (1897 b: 146); Dautzenberg (1927: 68, pl. III, fig. 23). Famelica mirmidina : Bouchet & Warén (1980: 90, figs. 188, 280, 281); Absalão et al . (2005: 35, figs. 105, 117); Rios (2009: 353, species 916). Type material : In Museé Océanographique de Monaco. Type locality : Azores, Princesse Alice (1895) sta. 46 (37 °42,40’N, 27 °27,30’W), 1385 m. Material examined : 18443 [1] B # 32; 18444 [4] OP I # 47; 18445 [6] OP I # 48; 18446 [4] OP I # 52; 18447 [4] OP I # 53; 18448 [4] OP I # 58; 17060 [1] OP I # 59; 18449 [1] OP I # 60; 18450 [3] OP I # 61; 18451 [4] OP I # 62; 18452 [4] OP I # 63; 18453 [1] OP I # 75; 18454 [1] OP I # 78; 18455 [1] OP I # 83; 16965 [3] OP II # 45; 18456 [5] OP II # 48; 18457 [2] OP II # 50 A; 18458 [2] OP II # 52; 18459 [11] OP II # 53; 18460 [2] OP II # 58; 18461 [1] OP II # 60; 18462 [2] OP II # 61; 18463 [6] OP II # 62; 18464 [4] OP II # 63; 18465 [6] OP II # 68; 18466 [3] OP II # 73; 18467 [1] OP II # 75; 18468 [1] OP II # 77; 18469 [1] OP II # 82; 18470 [2] OP II # 83; 18471 [1] OP II # 84; 18472 [1] OP II # 86; 18473 [2] OP II # 87. Description : Shell high, slender, white, up to 8.68 mm long. Protoconch with five whorls, light yellow. Protoconch 1 granulose and slightly darker. Protoconch 2 with a middle keel, straight, evenly spaced axial riblets below it, a subsutural row of large nodules and several smaller nodules between the axial riblets and the subsutural row. Clear-cut transition from protoconch to teleoconch. Teleoconch with four whorls of convex profile. Slight and low rounded spiral cord below the upper 1 / 3 of each whorl and several fine faint axial scars cross the entire surface of the whorls. Scars curved in a C shape below the spiral cord and inverted above it. Suture moderately deep. Base smooth except for the axial scars. Inner lip not entirely pressed against the parietal wall, forming a narrow chink. Anterior siphonal canal short. Geographic distribution : Northeast Atlantic: Azores (Dautzenberg & Fischer, 1896; Dautzenberg & Fischer, 1897 b; Dautzenberg, 1927) Azores and Portugal (Bouchet & Warén, 1980). Southwest Atlantic: Espírito Santo and Bahia States, Brazil (Absalão et al ., 2005); Campos Basin, Rio de Janeiro (this paper). Bathymetry : 750 m (Absalão et al ., 2005)– 3360 m (Bouchet & Warén, 1980). Discussion: The shell in this species is extremely thin and fragile. In all specimens studied here, the outer lip is broken, making it impossible to describe the aperture or the anal sinus. The holotype is broken in the same manner, and apparently so was the material studied by Bouchet & Warén (1980: 89, fig. 188). Four species of Famelica are assigned to the western Atlantic (Rosenberg, 2009): Famelica mirmidina (Dautzenberg & Fischer, 1896), F. monoceros (Watson, 1881), F. scipio (Dall, 1889) and F. catharinae (Verrill & Smith, 1884). Bouchet & Warén (1980) mentioned the narrow chink as a unique feature that differentiates F. mirmidina from all other known Turridae from the eastern Atlantic, in which the inner lip is completely pressed against the parietal wall, precluding the formation of the chink. The same difference applies to the western Atlantic Famelica , among which F. mirmidina is the only one that has the chink. Also, F. mirmidina has a faint spiral cord, unlike the other species, which show abundant spiral ornamentation. Famelica mirmidina was reported in Brazil for Bahia and Espírito Santo States (13 °– 19 °S). Its distribution is here expanded further South to include Rio de Janeiro (21 °– 22 °). : Published as part of Figueira, Raquel Medeiros Andrade & Absalão, Ricardo Silva, 2012, Deep-water Raphitomidae (Mollusca, Gastropoda, Conoidea) from the Campos Basin, southeast Brazil, pp. 1-27 in Zootaxa 3527 on pages 6-7, DOI: 10.5281/zenodo.210977 : {"references": ["Dautzenberg, P. & Fischer, H. (1896) Dragages effectues par l' Hirondelle et par le Princess-Alice, 1888 - 1895. Memoires de la Societe Zoologique de France, 9, 395 - 498, pls. 15 - 22.", "Dautzenberg, P. & Fischer, H. (1897 b) Dragages effectues par l' Hirondelle et par le Princess-Alice, 1888 - 1896. Memoires de la Societe Zoologique de France, 10, 139 - 234, pls. 3 - 7.", "Dautzenberg, P. (1927) Mollusques provenant des campagnes scientifiques du Prince Albert 1 de Monaco dans l'Ocean Atlantique et dans le Golfe de Gascogne. Resultats des campagnes scientifiques accomplies sur son yacht par Albert 1 Prince Souverain de Monaco, 72, 1 - 400, 1 - 9 pls.", "Bouchet, P. & Waren, A. (1980) Revision of the Northeast Atlantic Bathyal and abyssal Turridae (Mollusca, Gastropoda). Journal of Molluscan Studies, Supplement 8, 1 - 119.", "Absalao R. S., Pimenta, A. D. & Caetano, C. H. S. (2005) Turridae (Mollusca, Neogastropoda, Conoidea) coletados no litoral Sudeste do Brasil, Programa REVIZEE \" score \" central. Biociencias, 13 (1), 19 - 47.", "Rios, E. C. (2009) Compendium of Brazilian sea shells. pp. 668. Fundacao Universidade do Rio Grande, Rio Grande.", "Rosenberg, G. (2009) Malacolog 4.1.1: A Database of Western Atlantic Marine Mollusca. [WWW database (version 4.1.1)] URL http: // www. malacolog. org /", "Watson, R. B. (1881) Mollusca of H. M. S. Challenger Expedition. Parts VIII-X. Journal of the Linnean Society (London), 15, 388 - 475.", "Dall, W. H. (1889) Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877 - 78) and in the Caribbean Sea (1879 - 80), by the U. S. Coast Survey Steamer ' Blake'. Bulletin of the Museum of Comparative Zoology, 18, 1 - 492, pls. 10 - 40.", "Verrill, A. E. (1884) Second catalogue of Mollusca, recently added to the fauna of New-England coast and adjacent parts of the Atlantic, consisting mostly of deep-sea species, with notes on others previously recorded. Transactions of the Conneticut Academy of Arts and Sciences, 6 (1), 139 - 294."]}