Olivancillaria vesica Gmelin 1791
Creators: name: O, Va L E R I A T E S
name: Pastorino, Guido
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Olividae
Olivancillaria
Olivancillaria vesica

description: Olivancillaria vesica (Gmelin, 1791)
Figures 6A –E; 7A, B, G
Bulla vesica Gmelin, 1791: 3433; Dodge 1955: 10.
Oliva auricularia. Chenu 1845: 30, pl. 31, figs. 5–6 (non Lamarck, 1811).
Oliva aquatilis Reeve, 1850: pl. 18, fig. 38.
Olivancillaria (Lintricula) vesica. H. Adams & A. Adams 1853: 141, pl. 15, fig. 2a; Fischer 1887: 598.
Claneophila auricularia. Gray 1858: 48.
Oliva vescica (sic). Marrat 1871: 23, pl. 18, figs. 283–285 (not fig. 280).
Oliva (Olivancillaria) auricularia. Tryon 1883: 90 –91, pl. 36, fig. 93 (non Lamarck, 1811).
Lintricula auricularia. Marcus & Marcus 1959: 99 –188, pl. 1, figs. 3–9 (non Lamarck, 1811).
Olivancillaria auricularia. Burch & Burch 1964: pl. 7, fig. 8 (non Lamarck, 1811); Thomé 1966: 167.
Olivancillaria vesica vesica. Klappenbach 1966: 76; Rios 1970: 101, pl. 31; 1985: 110, pl. 38, fig. 488; Tursch 1988: 246; Rios 1975: 111, pl. 33, fig. 469; Rios 1994: 142, pl. 46, fig. 611; Borzone & Vargas 1999: 55 –60; Caetano & Absalão 2002: 215 –218; Caetano et al. 2003: 1 –8; Absalão & Pimenta 2005: 20, fig. 38; Rios 2009: 270, No. 668.
Olivancillaria vesica. Carranza & Norbis 2005: 83 –89.
Diagnosis. Shell large (up to 60 mm), oval-oblong, apex usually not covered by callus; spire medium size; columellar callus thin but distinct; shell grayish with zig-zag light brown axial lines; fasciolar band light brown.
Description. Shell large oval-oblong, solid, thick (thickness ~ 1 mm); surface polished, bright; protoconch usually not covered by columellar callus; teleoconch of four flat whorls; spire of 1 2/3 convex whorl; suture channeled, half covered by columellar callus; aperture elongated, approximately 4/5 of total shell length; outer lip curved; posterior part of columella convex and smooth, with 4–10 anterior oblique folds; externally to those folds there are 2 or 3 pronounced folds parallel to columellar edge; fasciolar band well defined, light brown; posterior groove deep; siphonal channel deep (Figure 6A –E).
Shell ultrastructure as in O. urceus (Figure 7 D).
Radula rachiglossate (Figure 7A) as in O. urceus, some specimens with a unique denticle on one side of the lateral rachidian cusp.
Siphon short with few papillae of the same size on the distal tip (Figure 7 G).
Egg capsules hemispherical, elevated, flattened and flexible. A suture bisects the capsule in two equal parts. A large operculum (escape-aperture) defined by a groove covers the entire capsule. A single embryo hatches from each capsule. According to Borzone & Vargas (1991) living specimens of Tivela mactroides and T. ventricosa are the most common oviposition substrates at least in the southern Brazil area.
Geographic distribution. Iguape (13°34’S; 38°48’W), Bahia state to Florianópolis 27°35’S; 48°33’W), Santa Catarina state, both in Brazil in 0–20 m depth. There is no record of this species outside Brazilian waters.
Type material. [O. vesica] was not found at the Linnaean Society of London (LSL) where most of the material studied by Linnaeus is housed. [O. aquatilis] holotype NHMUK 1892.9.24.20. In order to clarify the taxonomic status of Olivancillaria vesica we designate the specimen MNRJ 18.979, illustrated here (Figures 6 D–E) as neotype, in agreement with the article 75.3.1–7 of the ICZN, with type locality Maricá, Rio de Janeiro state, Brazil.
Type locality. [O. vesica] and [O. aquatilis] both from Brazil.
Other material examined. Brazil. Iguape, Bahia (BA): MNRJ 6905, MZUSP 81401; Caravelas, BA: MZUSP 61340; Cabo de São Tomé, Rio de Janeiro (RJ): MZUSP 34717; Rio das Ostras, RJ: MNRJ 9553; Buzios, RJ: MORG 20998 (intertidal), MNRJ 6910, 8541, MZUSP 80611; Barra da Tijuca, RJ: MZUSP 33532; Cabo Frio, RJ: MNHNM 9593, 9597, MORG 4185, 34197, MNRJ 2759, 2768, 2816, 4184, 4906, 5898, 8615, 14357; RJ: MORG 1056; Arraial do Cabo, RJ: MORG 42998 (intertidal), MZUSP 65715, 65716, 70938, MNRJ 2802; Saquarema, RJ: MNRJ 6246; Maricá, RJ: MNRJ 7812, 7928, NMR 61890; Niterói, RJ: MNRJ 7222, 9692, 14570; Copacabana, RJ: MORG 33897, MNRJ 5899, 8085, 8390, 13114, 13119; Praia de Grumari, RJ: MNRJ 1889, 1890, 6459, 9459, 9511; Ilha Grande, RJ: MNHNM 9592; Caraguatatuba, SP (São Paulo): MZUSP 704; Santos, SP: MORG 13590 (intertidal), 34196; Peruíbe, SP: MORG 10658, 43233 (intertidal); Ilha Comprida, SP: MNHNM 9141; Cananeia, SP: MZUSP 33242; 51196; SP: MNHNM 9154, 9175 (20 m), 9556, MORG 10657, 10824, 10872, MNRJ 14304, Matinhos, PR (Paraná): MZUSP 51160; Guaratuba, PR: MZUSP 51190, 51194; Piçarras, SC (Santa Catarina): MORG 46727, 47753, 50223; Itapema, SC: MORG 18133; Bombinhas, SC: MORG 50742 (intertidal); Campeche, SC: MORG 42889 (intertidal); Pântano do Sul, SC: MNRJ 14347; SC: MNHNM 9596.
Remarks. Bulla vesica Gmelin, 1791 was described, in brief and rather vaguely, without any particular feature that easily differentiates from other species of Olivancillaria. However, it refers to the figure of Bonanno, (1684, fig. 332) a pre-Linnean, unavailable, work. Although this figure is also somewhat imprecise it is possible to appreciate the similarity with Olivancillaria vesica (illustrated here in Figures 6 D–E). Probably, this unclear description plus a poorly defined figure brought confusion throughout history. O. vesica was usually mixed or synonymized by different authors with Oliva auricularia Lamarck, 1811, which also has neither type material nor original illustration (e.g. Chenu (1845) and Tryon (1883) grouped O. vesica within O. auricularia). Reeve (1850: pl. 18, sp. 38) already mentioned this problem and contributed to the general confusion by synonymizing O. auricularia Duclos (non Lamarck) within Oliva aquatilis. Most of the observed differences in the spire shape between specimens of O. vesica depend on the degree of concealment of it, due to a great variation in the amount of subsequent deposition of CaCO3 on the columellar callus.
Marcus & Marcus (1959: pl. 1, figs. 3–9) illustrated the characteristic siphon papillae of O. vesica (as Lintricula auricularia). This distinctive character of the siphon, and the zig-zag dark axial lines and elongated shape of the shell serve to easily differentiate O. vesica from O. auricularia. Rocha Barreira (2001) also considered Marcus & Marcus’s material as O. vesica.
description: Published as part of O, Va L E R I A T E S & Pastorino, Guido, 2011, A revision of the genus Olivancillaria (Mollusca: Olividae) from the southwestern Atlantic, pp. 1-34 in Zootaxa 2889 on pages 10-13, DOI: 10.5281/zenodo.207201