Chondrina dertosensis ( Bofill, 1886 )

Kokshoorn, Bas & Gittenberger, Edmund, 2010, Chondrinidae taxonomy revisited: New synonymies, new taxa, and a checklist of species and subspecies (Mollusca: Gastropoda: Pulmonata) 2539, Zootaxa 2539 (1), pp. 1-62 : 32

Chondrina dertosensis ( Bofill, 1886) (pl. 10 figs A–D)

Pupa dertosensis Bofill, 1886: 162 . Lectotype (design. Gittenberger 1973: 222): Spain, Tarragona, Sierra de Cardó;

MZB (pl. 10, fig. B).

Chondrina jumillensis montrealensis Altimira, 1959: 92 . Lectotype (design. Gittenberger 1973: 214): Spain, Tarragona,

Montreal; RMNH 54896.

Chondrina farinesii farinesii ; Gittenberger, 1973 [part.]: 213, fig. 118. Not Des Moulins, 1835.

Description.—Shell shape varying between slender conical and fusiform with a more or less elongated, conical spire; teleoconch sculptured with regular riblets. Apertural lip not reflexed but internally thickened by a conspicuous white rib. Rarely, the aperture may seem to be toothless in frontal view. The columellaris is than situated as a denticle, deep inside the shell, and both the linear angularis and the parietalis are lacking completely. As the opposite extreme, these teeth can be present, together with one or two, usually low, palatals.The largest shell, from Pratdip (UTM CF1944), measures 8.5 × 3.1 mm, with 8¼ whorls, whereas the smallest one, from Balneario de Cardó (UTM BF9635), is only 4.6 × 2.2 mm, with 6¼ whorls.

Notes.—The re-evaluation of Bofill’s Pupa dertosensis as a separate species is mainly based on the results of DNA sequence data. Much more molecular data are necessary, however, to determine the limits of its morphological variation and, consequently, its geographical boundaries. For the time being the combination of riblets and a thickened apertural lip has to be accepted as morphologically diagnostic.