Taxon classification Animalia Stylommatophora Megaspiridae

Thaumastus (Thaumastus) insolitus (Preston, 1909) Figs 25 D–E, 35

Bulimus (Thaumastus) insolitus Preston 1909: 509, pl. 10 fig. 9; Breure and Ablett 2015: 35, 4 i–iii, L9ii.

Thaumastus insolitus; Richardson 1995: 377 (references).

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

Type locality.

"Chanchamayo, Peru".

Type material.

NHMUK 1947.3.11.1, holotype.

Diagnosis.

Shell relatively medium-sized, blackish-brown coloured, coarsly sculptured with transverse ridges crossed by fine, spiral grooves, giving the last whorls a finely beaded appearance, suture somewhat descending in front, peristome thickened, reflexed below, parietal callus polished.

Dimensions.

Shell height 70.4, diameter 31.2 mm.

Distribution.

Peru, Dept. Junín, Chanchamayo valley; ibid., near Campanillayoc (Zilch 1954: 76); near Carpapata (Breure 1978).

Ecoregion.

Peruvian Yungas [NT0153].