Olivancillaria orbignyi ( Marrat, 1868 )

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, Zootaxa 2889, pp. 1-34 : 20-23

Olivancillaria orbignyi ( Marrat, 1868)

Figures 12–13

Olivancillaria auricularia d’Orbigny, 1840 (non Lamarck, 1811); 421, pl. 59, figs. 20–22.

Olivancillaria vesica . H. Adams & A. Adams 1853 (non Gmelin, 1791): 141, pl. 15, fig. 2 (only).

Oliva orbignyi Marrat, 1868: 167 –168; Marrat 1871: 24, pl. 25, fig. 458; Burch & Burch 1960: 30.

Oliva (Callianax) orbignyi . Tryon 1883: 88, pl. 34, fig. 59.

Olivia (sic) orbignyi Rydén 1936: 259 , fig. 133d; Martínez Soler 1964: 280, fig. 7.

Agaronia testacea Barattini & Ureta 1961: 128 (non Lamarck, 1811).

Olivancillaria uretai Klappenbach, 1965: 6 –8, pl. 2; Thomé 1966: 167; Figueiras 1967: 66; Sicardi 1967: 57; Olivier & Penchaszadeh 1968: 6; Rios 1970: 100, pl. 31; Castellanos 1970: 119; Castellanos 1971: 51; Olivier et al. 1971: 31; Penchaszadeh 1971: 50; Figueiras & Sicardi 1973: 263 –264, pl. 14 fig. 192; Penchaszadeh & Olivier 1975: 137; Rios 1975: 110, pl. 32, fig. 467; Scarabino 1977: 190; Rios 1985: 110, pl. 38, fig. 486.; Abbott & Dance 1986: 193; Calvo 1987: 162, fig. 146; Tursch 1988: 246; Borzone 1994: 27; Rios 1994: 142, pl. 46, fig. 609; Borzone 1995: 51; Borzone & Vargas 1999: 57; Scarabino 2004: 322; Thomé et al. 2004: 57, N° 48; Clavijo et al. 2005: 389; Demicheli & Scarabino 2006: 526; Scarabino et al. 2006: 146; Rios 2009: 269, No. 666.

Olivancillaria teaguei . Castellanos, 1970: partim 119, (non Klappenbach 1964).

Agaronia orbignyi . Wagner & Abbott 1978: 809.

Diagnosis. Shell of medium size (up to 35 mm) oval-oblong; spire very high; columella straight; columellar callus faint; shell grayish, fasciolar band light brown.

Description. Shell oval-oblong, solid, smooth, medium thickness (~0.6 mm); protoconch 1 1/2–1 3/4 whorls, translucent; spire very high, of 4 1/2 convex whorls; transition to teleoconch indistinct; suture channeled not covered; columellar callus faint, extended just towards suture; aperture elongated, 3/4 of total shell length; outer lip smooth slightly curved; 3–5 anterior oblique folds, 2–4 pronounced folds parallel to columellar edge; fasciolar band well defined, light brown in color; posterior groove deep; siphonal channel deep ( Figure 12 ).

Shell ultrastructure of three layers: as in O. urceus ( Figure 13 B).

Radula ( Figure 13 A) as in O. urceus .

In freshly collected specimens foot uniform white and siphon brown reddish in color. Penis ( Figure 13 C) as in O. deshayesiana , siphon ( Figure 13 D) as in O. urceus .

Egg capsules rounded with thin margin and laterally compressed. Large operculum defined by a groove (Figures 13E–F) covering the whole capsule. A single embryo per capsule. Capsule wall softer than in O. deshayesiana . Oviposition occurs on shell fragments ( Borzone 1995).

Distribution. From Niterói (22°58’S; 43°02’W), Rio de Janeiro state, Brazil to Caleta de los Loros (41°33’S; 65°02’W), Río Negro province, Argentina in 0–35 m depth.

Type material. [ O. orbignyi ] lectotype NHMUK 1854.12.4.416 and 3 paralectotypes NHMUK 1854.12.4.416/ 6–8 from San Blas, Patagonia, herein designated (see remarks).

[ O. uretai ] holotype MNHNM 725; 47 paratypes: MNHNM 435, 3 specimens, from La Coronilla, Rocha department; MACN 27536, 2; MNHNM 512, 6; 621, 2; 726 2; 832, 2; 887, 2; 940, 3; 903, 1; 927,3; 1243, 1; 1300, 5; MORG 17763, 1, all from La Paloma, Rocha department; MNHNM 12, 2, Punta del Este, Maldonado department; MNHNM 543, 5; 873, 2; 874, 6; 875, 3, all from Mar del Plata, Buenos Aires province Argentina.

Type locality. [ O. orbignyi ] San Blas, Patagonia (in Marrat 1871). [ O. uretai ] La Paloma, Rocha department, Uruguay.

Other material examined. Brazil. Niterói, Rio de Janeiro (RJ): MNRJ 8540; Barra da Tijuca, RJ: MNRJ 13887; RJ: MORG 27549; Guarujá, São Paulo ( SP): MORG 12972 (20 m); Piçarras, Santa Catarina (SC): MORG 50225 (intertidal); SC: MORG 30397; Torres, Rio Grande do Sul (RS): MZUSP 65714, 67432; Mostardas, RS: MORG 4737 (8–20 m), MZUSP 32903; Cassino, RS: MORG 3020, 14472, 15395, 18692, 23185, 27599, 31341, 43023, 47673, MZUSP 51032, MNRJ 7113, 13244; Chuí, RS: MORG 4529 (intertidal), 11179, 46530; RS: MORG 7819 (16 m), 23046 (22 m), 23144 (23 m), 39212, 41498, 43034, MZUSP 32746. Uruguay. Chuy, Rocha: MORG 32767 (intertidal); La Coronilla, Rocha: MLP 9590, MORG 16237, 32616, 47366, 49171, 50342, MNHNM 377, 3917, 4418; Cabo Polonio, Rocha: MLP 5224; Santa Teresa, Rocha: MNHNM 9043; La Paloma, Rocha: MACN- In 30482, 1025, MNHNM 4425, 4589, 7107, 9042, 9044, 9046, MORG 9504, 9848, 11748, 19055 (intertidal), 32591, 32810, 40917, MZUSP 18560, 18860, 33430, NMR 62171, MNRJ 6165; Aguas Dulces, Rocha: MNHNM 10427; Rocha: MNHNM 5887; Punta del Este, Maldonado: MORG 11199; Piriápolis, Maldonado: MNHNM 9041; Carrasco, Canelones: MNHNM 9040. Argentina. Pinamar, Buenos Aires: MACN-In 30862; Mar del Plata, Buenos Aires: MACN-In 09361-077, 12222–003, 37504, MLP 3026, 3909, 3931, MNHNM 623, 11787, MORG 9027, 10326, 10702, 10807 (35 m), 11671 (20 m), MNRJ 842; Monte Hermoso, Buenos Aires: MLP 1403, 1412– 3, 3022, 3907, 3908, 9589, MORG 39175; Bahía Blanca, Buenos Aires: MACN-In 06620-022, MLP 3040; Caleta de los Loros, Río Negro: MNHNM 7484.

Remarks. Marrat (1868) described Oliva orbignyi in a short note after figs. 20–22, plate 59 of d’Orbigny’s “ Voyage dans l’Amerique Meridionale ” (1840) (here illustrated in Figure 12 D). The lot 1854.12.4.416 NHMUK has eight specimens that were identified by d´Orbigny (1840) as Oliva auricularia Lamarck, 1811 . Four of them belong to O. orbignyi . In order to fix the species and preserve stability of nomenclature we designate NHMUK 1854.12.4.416/5 as lectotype and the other three as paralectotypes (NHMUK 1854.12.4.416/6–8). The lectotype illustrated here ( Figures 12A–C ) matches clearly the figure mentioned by Marrat to describe his new species (in agreement with Recommendation 74B of the ICZN). The last four specimens, of lot NHMUK 1854.12.4.416 belongs to O. carcellesi and are not considered as part of the type material of O. orbignyi .

Klappenbach (1965), ignoring Marrat’s note, as many authors did, described O. uretai , which is a junior subjective synonym of O. orbignyi . Several authors mentioned O. orbignyi after the original description (i.e. Marrat 1871, Tryon 1883, Rydén 1936, Burch & Burch 1960, Martínez Soler 1964, Wagner & Abbott 1978). Therefore, prevailing usage of Klappenbach name does not applied because both articles, 23.9.1.1 (“the senior synonym or homonym has not been used as a valid name after 1899”) and 2 (“the junior synonym or homonym has been used for a particular taxon, as its presumed valid name, in at least 25 works, published by at least 10 authors in the immediately preceding 50 years and encompassing a span of not less than 10 years”), of ICZN (1999) must be met to keep using this junior name. According to the priority rule Marrat’s name must be maintained.

Barattini & Ureta (1961) reported the presence of Agaronia testacea Lamarck, 1811 from the Uruguayan coast. The type material of the latter species housed at MHNG (unnumbered with the coast of Mexico as type locality) is a different valid species ( Figures 14A–B ). The material identified as Agaronia testacea by Barattini & Ureta (1961) is probably Olivancillaria orbignyi as was already noted by Klappenbach (1965) (as Olivancillaria uretai ).

Figures

FIGURE 13. Olivancillaria orbignyi (Marrat, 1868). A, radula, frontal view, scale bar = 100 µm; B, ultrastructure of the shell, scale bar = 200 µm; C, penis, scale bar = 200 µm; D, siphon, scale bar = 1 mm; E – F, egg capsule, MORG 27802, from Cassino, Rio Grande do Sul state, Brazil, scale bar = 200 μm.

FIGURE 12. A – C, lectotype of Olivancillaria orbignyi NHMUK 1854.12.4.416 / 5; D, plate 59, figure 21 from d´Orbigny (1840); E – F, MACN-In 37504 from Mar del Plata, Buenos Aires province, Argentina; G – I, holotype of Olivancillaria uretai Klappenbach, 1965 MNHNM 725, from La Paloma, Rocha department, Uruguay. Scale bar = 1 cm.

FIGURE 14. A – B, holotype of Agaronia testacea (Lamarck, 1811) MHNG unnumbered; C – D, holotype of Oliva steeriae Reeve, 1850 NHMUK 1892.9. 24.19 from Gambia; scale bar = 1 cm for A – D; E – G, paratype of Olivancillaria acuminata boavistensis Burnay and Conceição, 1983 from Cape Verde Islands, Africa, USC 11; H – I, Oliva nana Lamarck, 1811 MORG 10.996 from Angola; scale bar for E – I = 2 mm.