Abida secale andorrensis ( Bourguignat, 1863 )

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 : 14

Abida secale andorrensis ( Bourguignat, 1863) (pl. 2 figs A–F)

Pupa andorrensis Bourguignat, 1863: 153. (Or: Mollusques de San-Julia de Loria: 24).

Type locality: Andorra, Santa Juliá de Lória.

Lectotype: Colln Bourguignat, Museum of Natural History , Geneva.

Distribution.—See fig. 2 .

Description (after Gittenberger 1973).—Shell slender, cylindro-conical to fusiform, with 8 5/8–10 3/4 weakly inflated whorls, sculptured with regularly placed, moderate to strong axial ribs. The sculpture is often partially obsolete. Body whorl obliquely flattened and more or less clearly narrowed, with a strong keel. A slight external indentation accompanies the palatalis superior, at the position of the infraparietalis the apertural lip is mostly slightly indented. The palatal side of the aperture appears vertical (in lateral view). Umbilicus open. Shell height, 7.3–11.8 mm; width, 2.4–3.5 mm.

Apertural lip strongly thickened, continuing along the parietal side or aperture with a more or less prominent parietal callus. Rarely the aperture protrudes up to 0.2 mm. Angularis connected with spiralis. Subangularis lamelliform, more or less prominent. Infraparietalis well developed. Columellaris reaching only slightly further than the columella in front, conspicuously broader than the other lamellae there and ending abruptly, or sometimes connected with an indistinct fold on the apertural lip. Infracolumellaris longer, often reaching the apertural edge. Infrapalatalis, palatalis inferior and palatalis superior clearly indented and reaching up to the edge of the aperture. At the weak anterodorsal palatal center, a suprapalatalis and often a suturalis are present. At the apertural edge several more or less indistinct or more prominent folds may be present.

Genetic barcode.—GenBank accession numbers EU395339 – EU395342 .

Notes.— Abida s. andorrensis was reported from the northeastern part of the Segre valley, between Martinet and Prullans ( Gittenberger 1973). We consider this a dubious record, since this subspecies has not been found there during surveys in 2004–2006. Maybe atypical specimens of A. s. brongersmai (see for instance pl. 4 figs B–C) have been misidentified. However, A. s. andorrensis does occur in Spain. It has been recorded from the area around Nargó, west of the Segre river, as well as from the Parque Nacional Aigûes Tortes, 5 km NE of Bohi (= Boi) (Lérida). South of Nargó forms that are intermediate between A. s. andorrensis and A. s. tuxensis (pl. 2 figs D–F) are found.

Figures

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