Chondrina guiraoensis Pilsbry, 1918

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 : 39

Chondrina guiraoensis Pilsbry, 1918 (pl. 11 figs H–J)

Pupa jumillensis Rossmässler, 1859: 110 . Lectotype, design. Gittenberger (1973: 213) (SMF 43677a): Spain, Murcia, Jumilla. The shell characters enable the conclusion that the lectotype is not from Orihuela, Alicante, which is the second locality mentioned on the original label ( Haas 1926: 304; own observations).

Not Pupa jumillensis Pfeiffer, 1853 . Chondrina guiraoensis Pilsbry, 1918 [March]: 372, pl. 47 fig. 9 . Holotype (ANSP 22790): Spain, Murcia, Jumilla (Pilsbry 1918 [November]: 51).

Chondrina guiraonis Pilsbry, 1918 [November]: 51. Unjustified emendation (‘n. n.’) (ICZN Art. 32.5.1).

Chondrina farinesii ; Montoya et al., 1999: 131. Not Des Moulins, 1835.

Description.—Shell rather thick-set, with a short conical apical part and a last whorl which is often hardly broader than the penultimate one, light brownish to yellowish brown; teleoconch conspicuouisly sculptured with rather coarse riblets. Aperture with a more or less prominent angularis and usually a columellar denticle which is hidden behind the columella in frontal view; and only rarely an obsolete parietalis. Apertural lip neither reflected nor rib-like thickened inside.

Notes.—In view of the revised interpretation of the eastern Iberian Chondrina taxa with more or less obsolete apertural teeth, C. guiroensis is listed here as a species. Quite surprising, the oldest fossil Chondrina shells (pl. 11 fig. J) collected at the Sierra de Quibas ( Montoya et al. 2001), (which is only c. 25 km SE from Jumilla) are extremely similar to the recent C. guiraoensis , indicating that there have been no substantial changes in shell morphology in this species during at least 1.3 million years.

Figures

FIGURE 9. Distribution of Rupestrella species in Spain and N-Africa. A, Type localities of the taxa recognized by Pilsbry (1918) with the approximate distribution of R. dupotetii in gray; B, Localities of R. philippii in N-Africa based on material in the collection of the RMNH.