Glypteuthria meridionalis ( E. A. Smith, 1881 )

Pastorino, Guido, 2016, Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species , Zootaxa 4179 (3), pp. 301-344: 315-317

publication ID

http://doi.org/10.11646/zootaxa.4179.3.1

publication LSID

lsid:zoobank.org:pub:4E28347A-B0C4-4CF5-ACA4-0E9A6EAF930F

persistent identifier

http://treatment.plazi.org/id/BA7387AD-FF85-3623-FF12-5976FC31FA20

treatment provided by

Plazi

scientific name

Glypteuthria meridionalis ( E. A. Smith, 1881 )
status

 

Glypteuthria meridionalis ( E. A. Smith, 1881) 

Figures 8View FIGURE 8 A –L, 9A –D

Euthria meridionalis E. A. Smith, 1881: 29  , pl. 4, fig. 6; Rochebrune & Mabille, 1889: H61.

Euthria  Glypteuthria meridionalis Smith. Strebel, 1905: 627  , pl. 21, figs. 11, 11a –d; Melvill & Standen, 1914: 122.

Glypteuthria meridionalis Smith. Thiele, 1912  , pl. 13, fig. 6, pl. 16, fig. 17 (radula); Powell, 1951: 138; Carcelles & Williamson, 1951: 297; Dell, 1972: 36, fig. 10; Castellanos, 1992: 19, pl. 1, fig. 11.

Buccinulum meridionalis ( E. A. Smith, 1881)  . Forcelli, 2000: 92, fig.

Type material. Two syntypes, NHMUK 19.10.15.18–19 collected by HMS ALERT. Dell (1972: 36, fig. 10) illustrated the larger specimen as holotype, which constitutes a lectotype designation according to ICZN article 74.

Type locality. Portland Bay , St. Andrews Sound, 10 fms. [18.2 m] depth, and Sandy Point [ Chile] in 9–10 fms. [16.4–18.2 m] depth. 

Description. Shell small, up to 11.5 mm in height, fusiform, of 6 slightly convex whorls; protoconch of about 1 1/2 convex whorls, with 5 to 6 spiral threads; suture impressed, slightly channelled; aperture elliptic; siphonal canal rather deep and short; parietal callus thin. Spiral ornamentation of 5 flat threads per whorl, about 20 on the last; axial sculpture of 14 rounded ribs (varices) that develop nodes when crossing the spiral threads. Periostracum translucent, very thin, producing a scaly appearance on the sulci between threads. Color brownish or reddish.

Operculum ( Fig. 8View FIGURE 8 L) pale yellowish, ovate-elliptical, nucleus subterminal, thick rim, small attachment area towards left side.

Radula ( Figs 9View FIGURE 9 A, B) rachiglossate, central tooth with three cusps, the central cusp largest; lateral teeth with two large curved, hook-shaped cusps with an obsolete cusp close to the inner one.

Penis large, flat, thick with a small papilla on the tip ( Figs 9View FIGURE 9 C –D).

Material examined. Argentina: 1 spm., Isla Becasses, Ushuaia , (MACN-In 35213); 1 spm., 53°39’24”S, 70°55’30”W, 24 m depth, ( USNMAbout USNM 898494View Materials)GoogleMaps  ; 3 spms., 53°39’S, 70°55’W, 20 m depth, (USNM 898491); 3 spms., Ushuaia, (MACN-In 40516); 2 spms., Bahia Ensenada, Ushuaia , (MACN-In 40517); 2 spms., 54°17.647”S, 66°15.376”W to 54°17.346”S, 66°15.531”W, 56 m depth, with bottom trawl, CAV2014, St. 22/48, (MACN-In 40518); 2 shellsGoogleMaps  , Bahia Orange  , Tierra del Fuego, Mission du Cap Horn, (MACN-In 13914-1). Chile: 3 shells, Punta Arenas, (MACN-In 12382). 

Distribution. Only known from Tierra del Fuego and environs including the Straits of Magellan.

Remarks. The shell is similar to M. martensi  ; however, the protoconch of this species is distinctive, with axial threads instead of the typical spirals. Strebel (1905) included four Magellanic species in his new genus, i.e. the type G. meridionalis  , “ G.” martensi  , “ G.” agnesia  and “ G.” k o b e l t i. The only species belonging to Glypteuthria  is the type species. G. agnesia  is a synonym of Meteuthria martensi  and G. k o b e l t i belongs in a different new genus proposed here: Falsimacme  .

Powell (1951: 138, 1960: 148), Castellanos (1970: 98) and Dell (1972: 36) included Euthria acuminata Smith, 1915  in Glypteuthria  ; however, this is a columbellid (according to the radula illustrated in Fernández & Castellanos, 1973), probably belonging in the genus Amphissa  (sensu Rios, 1994: 124).

Castellanos (1970) included E. agnesia Strebel, 1905  in Glypteuthria  . Fernández & Castellanos (1973) included what they called E. agnesia Strebel, 1905  in the columbellid genus Pyrene  . Later Castellanos (1982) described the new species Amphissa cancellata  ( Columbellidae  ) to include this material that she considered previously as E. agnesia  .

Dell (1972) suggested Lachesis euthrioides Melvill & Standen, 1898  as a synonym, however this is a valid species, dealt with here in the new Prosiphiinae  genus Argeneuthria  .

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Neogastropoda

Family

Buccinidae

Genus

Glypteuthria

Loc

Glypteuthria meridionalis ( E. A. Smith, 1881 )

Pastorino, Guido 2016

2016
Loc

Buccinulum meridionalis (

Forcelli 2000: 92

2000
Loc

Glypteuthria meridionalis Smith. Thiele, 1912

Castellanos 1992: 19
Dell 1972: 36
Powell 1951: 138
Carcelles 1951: 297

1951
Loc

Euthria

Melvill 1914: 122Strebel 1905: 627

1914
Loc

Euthria meridionalis

Smith 1881: 29