Thaumastus (Thaumastus) inca ( d'Orbigny , 1835)

Breure, Abraham S. H. & Avila, Valentin Mogollon, 2016, Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae, ZooKeys 588, pp. 1-199 : 29

Taxon classification Animalia Stylommatophora Megaspiridae

Thaumastus (Thaumastus) inca ( d'Orbigny, 1835) Figs 26 D–F, 30C, 35

Helix inca d’Orbigny 1835: 16; Breure and Ablett 2015: 34, figs 4 iv–vi, L8iii.

Thaumastus (Atahualpa) brunneus Strebel 1910: 19, pl. 2 fig. 25.

Thaumastus inca ; Richardson 1995: 376 (references).

Type locality.

[Bolivia] "Tutulima, reipublica Boliviana".

Type material.

NHMUK 1854.12.4.116, lectotype ( Breure and Ablett 2015: 34).

Additional material.

NHMUK 1854.12.4.116 (3), paralectotypes; MNHN 28070 (3), paralectotypes.

Diagnosis.

Shell relatively large, elongate, uniformly brownish, suture slightly ascending in front, aperture relatively small, subovate, peristome thickened, sinuous, somewhat expanded, narrowly reflexed.

Dimensions.

Shell height 75.4, diameter 32.2 mm.

Distribution.

Bolivia, Dept. Cochabamba, Totolima.

Ecoregion.

Bolivian Yungas [NT0105].

Remarks.

This species has only been recorded from the type locality, for which Totolima is now the current name. This is a high-altitude locality (4500 m), which makes it more likely that the species may occur 20-40 km (N)NE where elevations of 2000-2500 m occur; this is the Parque Nacional Isiboro Secure. The synonymization of the Ecuadorian Thaumastus (Atahualpa) brunneus Strebel, 1910 by Richardson (1995) is evidently based upon the opinion of Pilsbry (1932: 391); as Strebel’s material was destroyed during World War 2 there is no longer an opportunity for comparison.