Thaumastus Martens in Albers, 1860

Breure, Abraham S. H. & Avila, Valentin Mogollon, 2016, Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae, ZooKeys 588, pp. 1-199 : 22

Taxon classification Animalia Stylommatophora Megaspiridae

Genus Thaumastus Martens in Albers, 1860

Bulimulus (Thaumastus) Martens in Albers 1860: 215.

Type species.

Bulimus hartwegi Pfeiffer in Philippi, 1846, by original designation.

Diagnosis.

Shell elongate-ovate to ovate conical, imperforate to rimate, solid, with rather blunt apex. Colour whitish to (mostly) brownish, generally with axial streaks or spiral band(s). Protoconch with axial sculpture. Whorls hardly to slightly convex, aperture generally subovate, peristome simple or hardly expanded.

Distribution.

Ecuador, Peru, Bolivia, Brazil.

Habitat.

Occurring generally in evergreen forest up to ca. 3000 m, where the species live in the leaf litter layer.

Anatomy.

Pilsbry 1902 [1901-1902]: Thaumastus (Thaumastus) taunaisii ( Férussac, 1822) [g, m, r]; Zilch 1953: Thaumastus (Thaumastiella) koepckei (Zilch, 1953) [g, m, r]; Breure 1978: Thaumastus (Thaumastus) foveolatus (Reeve, 1849) [g, h, r], Thaumastus (Thaumastus) insolitus (Preston, 1909) [g, r], Thaumastus (Thaumastus) sangoae (Tschudi, 1852) [g].

Phylogenetic data.

Breure and Romero 2012: Thaumastus (Thaumastus) achilles (Pfeiffer, 1853), Thaumastus (Thaumastus) largillierti (Philippi, 1845).

Key to the subgenera of Thaumastus in the study area