Abida secale tuxensis ( Westerlund, 1902 )

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 : 15

Abida secale tuxensis ( Westerlund, 1902) (pl. 2 figs G–K)

Pupa ( Torquilla ) tuxensis Westerlund, 1902: 40.

Type locality: Spain, Lérida, Tuxent.

Lectotype: Museum of Natural History , Göteborg 2252.

Distribution.—See figs 2 and 3 .

Description.—Shell slender or very slender, more or less cylindro-conical, with 7 7/8 to 10 1/2 whorls, sculptured with regularly placed axial ribs. Body whorl obliquely flattened, slightly narrowed, with a very indistinct keel. Palatalis superior accompanied by a clear external indentation of the apertural lip. Palatal side of the aperture very slightly leaning forward (in lateral view). Shell height, 10.2–13.8 mm; width, 3.1–3.7 mm. The greatest width is found approximately halfway the height of the shell. Umbilicus open.

Apertural lip moderately to strongly thickened; parietal edges connected by very faint callus. Angularis and spiralis connected, with a slight indentation or a weak callus. Subangularis present, partly attached to angularis. Parietalis present, infraparietalis only when more undefined folds are present on the apertural lip. Columellaris reaching more or less far beyond the columella in front; not truncated. Infracolumellaris and columellaris about equally well developed. The infrapalatalis, the palatalis inferior and the palatalis superior are hardly to clearly incised or interrupted. They reach up to the edge of the aperture. At the anterodorsal palatal center a suprapalatalis and often a suturalis are present.

Genetic barcode.—GenBank accession numbers EU395416 – EU395426 .

Notes.—This subspecies has not been distinguished from A. s. lilietensis by Gittenberger (1973). However, in A. s. tuxensis the shell is generally larger and more cylindrical than in A. s. lilietensis, which is characterized by more spindle-shaped, often smaller shells. The two subspecies are not found sympatrically ( fig. 2 ).

Figures

FIGURE 2. Distribution of Abida secale subspecies (I) in NE Spain and Andorra.

FIGURE 3. Distribution of Abida secale subspecies (II) in NE Spain.