Lanayrella vagabunda ( Mabille, 1885 ) Salvador & Cunha, 2020

Salvador, Rodrigo B. & Cunha, Carlo, 2020, Lanayrella, a new Acteonidae genus (Gastropoda, Heterobranchia) from Tierra del Fuego, Journal of Natural History 54 (15 - 16), pp. 1009-1018 : 1011-1014

publication ID

https://doi.org/ 10.1080/00222933.2020.1777338

publication LSID

lsid:zoobank.org:pub:FF2CDE88-77B1-4CB5-9EB9-05E6EBB845BD

persistent identifier

https://treatment.plazi.org/id/D44087E8-FFE9-4351-FEE4-FB78FFE79B4C

treatment provided by

Carolina

scientific name

Lanayrella vagabunda ( Mabille, 1885 )
status

comb. nov.

Lanayrella vagabunda ( Mabille, 1885) comb. nov. ( Figure 1 View Figure 1 )

Tornatella vagabunda Mabille, 1885: 208 ; Rochebrune and Mabille 1889: 12–14, pl. 6, figs. 2a–b; Valdés and Héros 1998: 698, fig. 1C. Acteon vagabunda: Pilsbry 1894: 164 , pl. 18, 95–96. Acteon vagabundus: Thiele 1912: 265 ; Linse 1999: 403; Forcelli 2000: 116. ‘ Acteon vagabundus: Castellanos et al. 1993: 8 , figs 5–6. Toledonia vagabunda: Rosenberg 2009 [in part]; Forcelli and Narosky 2015: pl. 7, fig. 18.

Type locality

Chile: Magallanes Province, Cape Horn. ‘ In insulis Magellanicis (de la Mission au Cap Horn, 1882–1883)’ ( Rochebrune and Mabille 1889).

Type material

Syntype MNHN-IM-2000-23191.

Diagnosis

Whorls and spire proportionately taller than in L. ringei ; shell wall thinner; aperture more elongated. Teleoconch sculptured by more numerous punctate spiral grooves, closely packed together; punctae rectangular, large and well defined throughout the entire shell.

Redescription

Shell elongated, last whorl with a slightly rounded profile, imperforate; D/H 0.49–0.52. Spire with slightly rounded whorls and faintly step-like profile; suture distinctly marked. Colour light brown. Protoconch indistinct, nucleus fully immersed ( Figure 1 View Figure 1 (g)); first whorl width 0.42 mm. Teleoconch with 4.5 whorls, entirely sculptured by narrow punctuated spiral grooves (~26 grooves on last whorl), separated from each other by a distance of unsculptured shell of roughly the width of each groove (0.14 mm); grooves become more numerous in later whorls and are more closely packed together towards umbilicus ( Figure 1 View Figure 1 (c)). Grooves composed of small rounded-rectangular punctae, partially fused to next one within each groove, but still individually distinct ( Figure 1 View Figure 1 (f)). Aperture anteriorly rounded, slightly narrowed posteriorly; h/H 0.70; parietal region 0.5 h, with thin welldelimited callus; columellar region broad, slightly expanded, with a sharp edge, bearing a thickened adapical fold; outer lip sharp, thickened externally.

Measurements

Syntype: H = 8.2 mm, D = 4.3 mm, S = 2.5 mm, h = 5.7 mm, d = 2.6 mm.

Distribution

Tierra del Fuego, Cape Horn. Literature data: Magellan region ( Linse 1999: defined as the Patagonian shelf south of ca. 41°S on both Pacific and Atlantic sides, including the Falkland Islands / Islas Malvinas); or 55– 56°S 65– 68°W ( Castellanos et al. 1993; Rosenberg 2009; Rosennfeld and Aldea 2011). Depth: 10 m ( Rosenberg 2009; Rosennfeld and Aldea 2011).

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Cephalaspidea

Family

Acteonidae

Genus

Lanayrella

Loc

Lanayrella vagabunda ( Mabille, 1885 )

Salvador, Rodrigo B. & Cunha, Carlo 2020
2020
Loc

Tornatella vagabunda

Forcelli DO 2000: 116
Linse K 1999: 403
Valdes A & Heros V 1998: 698
Castellanos ZJAD & Landoni NA & Dadon JR 1993: 8
Thiele J 1912: 265
Pilsbry HA 1894: 164
Rochebrune A-T & Mabille J 1889: 12
Mabille J 1885: 208
1885