Cyclodontina chuquisacana (Marshall, 1930) Marshall, 1930

Breure, Abraham S. H. & Avila, Valentin Mogollon, 2016, Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae, ZooKeys 588, pp. 1-199 : 36-38

Taxon classification Animalia Stylommatophora Odontostomidae

Cyclodontina chuquisacana (Marshall, 1930) comb. n. Figs 36 C–E, 38

Odontostomus (Spixia) chuquisacana Marshall 1930: 3, pl. 1 fig. 2; Zischka 1953: 82.

Spixia chuquisacana ; Richardson 1993: 57 (references).

Type locality.

"Province of Chuquizaca, Bolivia".

Type material.

USNM 380700, holotype.

Diagnosis.

Shell thin, rimate, chestnut to grayish-tawny coloured, sculptured with numerous low, irregular, wavy, sometimes interrupted, longitudinal folds, and a faint indication of spiral striae, last whorl contracted at base, angulate around umbilicus, a deep pit just behind the outer lip, aperture subtriangular, with a prominent palatal lamella, a weak callus as basal lamellae, a strong, platelike, twisted columellar lamella, peristome thin, rounded below attachment to body whorl (modified after Marshall 1930).

Dimensions.

Shell height 17.5, diameter 4.75 mm.

Distribution.

Bolivia, Dept. Chuquisaca.

Remarks.

In his description Marshall mentioned the protoconch sculpture as "apical and first three whorls are confusedly vertically costulate, malleate and spirally striate". The latter description hints to a protoconch sculpture which is classified by Schileyko (1999) as Cyclodontina Beck, 1837. Also other characteristics place this species in the vicinity of Cyclodontina lemoinei (Ancey, 1892). This taxon needs further anatomical and molecular studies to clarify its systematic position.