Abstract

MIQUEL, Sergio E.. Finding of Systrophia argentina n. comb. in the Argentine Precordillera (Mendoza province) a century and a half after its description (Mollusca: Gastropoda: Scolodontoidea). Rev. Mus. Argent. Cienc. Nat. [online]. 2020, vol.22, n.2, pp.167-172. ISSN 1853-0400.  http://dx.doi.org/10.22179/revmacn.22.677.

Systrophia argentina (Strobel, 1874) n. comb. is here re-described 150 years after its discovery. The specimens were found in the Argentine Precordillera (Quebrada San Isidro, Mendoza province, Argentina), at 2.000 m, near the typical locality of the species, here restricted to the Angostura or garganta (gullet) of Villa Vicencio and Casa de Piedra. It is the southernmost distribution of the genus. This snail has a shell of medium size, planispiral, with six whorls; radula with central plate tricuspid, and latero-marginal teeth aculeate, formula: 13 - C - 13; vagina short, spermathecal duct reaching the distal extreme of the vagina, near the atrium; penial sheath long, penis occupying most of the penial sheath, epiphallus with a retractor muscle adhered to its extreme, large and quadrangular gland attached to the penial sheath; atrium very short. S. argentina is the only species of Systrophia L. Pfeiffer, 1855 in Argentina, being the most austral distribution of the genus

Keywords : Scolodontidae; South America; Andes mountains; Mendoza province; Genital apparatus; Radula.

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