Thaumastus (Thaumastus) foveolatus (Reeve, 1849)

Breure, Abraham S. H. & Avila, Valentin Mogollon, 2016, Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae, ZooKeys 588, pp. 1-199 : 27

Taxon classification Animalia Stylommatophora Megaspiridae

Thaumastus (Thaumastus) foveolatus (Reeve, 1849) Figs 25 A–C, 30 A–B, 34

Bulimus mahogani Pfeiffer 1841: 42; Pfeiffer 1844 in Küster and Pfeiffer 1840-1865: 40, pl. 13 figs 1-2; Pfeiffer 1848: 24. Not Bulinus mahogani Sowerby, 1838. See remarks.

Bulimus foveolatus Reeve 1849 [1848-1850]: pl. 73 fig. 526; Breure and Ablett 2015: 30, figs 1 v–vi, L7i.

Bulimus impressus Tschudi in Troschel 1852: 188.

Thaumastus foveolatus ; Richardson 1995: 375 (references, synonymy).

Thaumastus (Thaumastus) foveolatus ; Ramírez et al. 2003: 282.

Thaumastus (Thaumastus) impressus ; Ramírez et al. 2003: 282.

Type locality.

"Vitoe, near Sarma [sic, Tarma], Alto-Peru".

Type material.

NHMUK 1975275, lectotype ( Breure 1979: 44).

Additional material.

NHMUK 1975276 (1), paralectotype.

Dimensions.

Shell height 71.5, diameter 37.0 mm.

Diagnosis.

Shell relatively medium-sized, uniformly brownish with a slightly darker spiral band at the periphery and a yellowish one below the suture, sculptured with spiral rows of oblong granules, suture crenulate, ascending in front, aperture subovate, columellar margin curved and dilated above, peristome white, hardly expanded below, and very narrowly reflexed.

Distribution.

Peru, Dept. Junín, near Tarma, Mito; ibid., 19.5 km WNW San Ramón ( Breure 1978).

Ecoregion.

Peruvian Yungas [NT0153].

Remarks.

Pfeiffer (1844 in Küster and Pfeiffer 1840-1865) figured a species clearly unlike the original figure by Sowerby, which he considered a Chilean species; Pfeiffer said his figured specimen was from "Chili und Peru", only the latter locality seems plausible for this species. Reeve (1849 [1848-1850]) considered his taxon identical to the species figured by Pfeiffer. The name “Vitoe” might be a misspelling for Mito, which is ca. 70 km SE Tarma at ca. 3450 m elevation.