Aulacospira rhombostoma Quadras & Moellendorff , 1896

Pall-Gergely, Barna, Schilthuizen, Menno, Oerstan, Aydin & Auffenberg, Kurt, 2019, A review of Aulacospira Moellendorff, 1890 and Pseudostreptaxis Moellendorff, 1890 in the Philippines (Gastropoda, Pupilloidea, Hypselostomatidae), ZooKeys 842, pp. 67-83 : 74

Aulacospira rhombostoma Quadras & Moellendorff, 1896 Figures 3A, 5G

Aulacospira rhombostoma Quadras & Möllendorff, 1896: 8-9; Möllendorff 1898: 150; Pilsbry, 1917 (1916-1918): 223-224, plate 38, figs 13.

Aulacospira (Aulacospira) rhombostoma Zilch, 1984: 167, plate 2, fig. 28.

Type locality.

"in insula Tablas".

Diagnosis.

Shell strongly flattened and keeled, body whorl with subsutural furrow on the dorsal side, protoconch smooth, teleoconch roughly wrinkled and finely striated spirally; aperture with a weak columellar and parietal tooth, and a palatal ridge corresponding to the furrow; aperture free from penultimate whorl.

Measurements (in mm).

H = 1.7-1.8, D = 3.2-3.5 (n = 3).

Types examined.

Philippinen, Tablas, coll. Möllendorff, SMF 4612 (lectotype, selected by Zilch [1984], H: 1.8 mm, D: 3.5 mm); same data, SMF 4613/7 paralectotypes.

Additional material examined.

Tablas Id., Looc, leg. Univ. Alabama, TH Aldrich Coll. (THA-3084), UF 112321 (4 shells).

Distribution.

This species is only known from the type locality on Tablas Island (Fig. 2).