Drymaeus exoticus da Costa, 1901

Breure, Abraham S. H. & Ablett, Jonathan D., 2014, Annotated type catalogue of the Bulimulidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London, ZooKeys 392, pp. 1-367 : 56

Drymaeus exoticus da Costa, 1901 Figs 33D-F , L21v

Drymaeus exoticus da Costa 1901: 239, pl. 24 fig. 10; Pilsbry 1901 [1901-1902]: 156, pl. 48 fig. 52; Breure 1979: 109; Linares and Vera 2012: 185.

Type locality.

"The hot country, Upper Magdalena River, Colombia".

Label.

"hot country / Columbia", taxon label in da Costa’s handwriting.

Dimensions.

"Long. 23.5, diam. 11 mm."; figured specimen herein H 24.8, D 12.2, W 6.1.

Type material.

NHMUK 1907.11.21.38, lectotype (da Costa coll.).

Remarks.

This material was considered as holotype by Breure (1979). However, da Costa did not state on how many specimens his description was based. Breure (unpublished data) found another specimen in the Dautzenberg collection with a label in da Costa’s handwriting, but without enough evidence to consider it a type specimen. However, it cannot be excluded that da Costa had more than one specimen at hand; according to Art. 74.6 ICZN, the NHMUK specimen should be considered as a lectotype.

Current systematic position.

Bulimulidae , Drymaeus (Drymaeus) exoticus (da Costa, 1901).

Figures

Figure 33. Drymaeus species. A-C Drymaeus (Drymaeus) incognitus da Costa, 1907, holotype NHMUK 1907.11.21.24 (H = 29.8) D-F Drymaeus (Drymaeus) exoticus (da Costa, 1901), lectotype NHMUK 1907.11.21.38 (H = 24.8) G-I Drymaeus (Drymaeus) elsteri da Costa, 1901, lectotype NHMUK 1907.11.21.34 (H = 33.9) J-L Drymaeus (Drymaeus) subventricosus da Costa, 1901, lectotype NHMUK 1907.11.21.37 (H = 30.1) M-O Drymaeus (Drymaeus) dacostae (Sowerby III, 1892), holotype NHMUK 1907.11.21.51 (H = 26.3). All enlarged.

Figure L 21. Labels. i Bulimus erubescens Pfeiffer, 1847 ii Bulinus eschariferus Sowerby I, 1833 iii Bulimus excoriatus Pfeiffer, 1855 iv Bulimus exornatus Reeve, 1849 v Drymaeus exoticus da Costa, 1901 vi Bulimulus (Drymaeus) expatriatus Preston, 1909 vii Bulimus fallax Pfeiffer, 1853.