Shadinia Akramowski, 1976

Diana Delicado, ladimir Pešić & Peter Glöer, 2016, Unraveling a new lineage of Hydrobiidae genera (Caenogastropoda: Truncatelloidea) from the Ponto-Caspian region, European Journal of Taxonomy 208, pp. 1-29 : 20

Genus Shadinia Akramowski, 1976

Type species

Pyrgula terpoghassiani Shadin, 1952 .

New diagnosis

Shell ovate-conic, 3 to 5 mm high; large and convex body whorl; rest of the whorls tall and convex; aperture complete, pyriform, angled on the top and fused to the body whorl. Operculum corneous, yellowish, thin, pliable, ellipsoidal, paucispiral with submarginal nucleus. From two to three pairs of basal cusps in radular central tooth. Ctenidium occupying nearly the entire length of pallial cavity and bearing well-developed gill filaments. Osphradium opposite approximate middle of ctenidium. Bursa copulatrix lying against the middle section of the albumen gland; pigmented renal oviduct; two opposite seminal receptacles, SRII smaller than SRI. Prostate gland bean-shaped, about twice as long as wide; exit of the pallial vas deferens from the posterior-most section of the prostate gland and seminal vesicle entering the prostate gland in its middle section; penis simple, gradually tapering, with a distal end tapered dark pigmented. Nervous system with black pigmentation and moderately concentrated.