Bulimulus (Drymaeus) abruptus Rolle, 1904

Breure, Abraham S. H., 2011, Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda) in the Royal Belgian Institute of Sciences, Brussels, with descriptions of two new species, ZooKeys 101, pp. 1-50 : 5

Bulimulus (Drymaeus) abruptus Rolle, 1904 Figs 12A, 12i

Bulimulus (Drymaeus) abruptus Rolle 1904: 35.

Type locality.

"Huancabamba in Peru"; see remarks.

Label.

"Huancabamba, / Peru 1904"; in Rolle’s handwriting. Another label, in Dautzenberg’s handwriting, indicating that he obtained it on 16.vii.1907 from Rolle.

Dimensions.

"Alt. 44, diam. max. 24 (..) mm"; figured specimen H 36.6, D 16.9, W 6.5.

Type material.

RBINS/MT2332, two syntypes (Dautzenberg coll.).

Remarks.

Rolle did not state on how many specimens his description was based upon. However, there is another specimen in the NHM collection which will be designated lectotype (Breure and Ablett, unpublished data). The locality is ambiguous, as there are several places called “Huancabamba” in Peru. There were, however, several other species described by Rolle from the same locality, among them Columbinia huancabambensis , which is regarded by Loosjes and Loosjes-van Bemmel (1984: 33) as occurring in northern Peru. Another species described in the same paper, Systrophia moellendorffii , was said by Haas (1955: 367) to have been rediscovered in the Chanchamayo valley [Dept. Pasco]. These, and the fact that a third Rolle species, Newboldius illustris is known to occur in the same region, makes Dept. Pasco, Huancabamba likely to be the locality where Rolle’s taxa occur.

Current systematic position.

Bulimulidae , Drymaeus (Drymaeus) abruptus (Rolle, 1904).