Euthria zboroviensis Friedberg, 1912

Harzhauser, Mathias & Landau, Bernard M., 2024, The Colubrariidae, Eosiphonidae, Melongenidae, Pisaniidae, Prodotiidae and Tudiclidae (Gastropoda, Buccinoidea) of the Miocene Paratethys Sea, Zootaxa 5427 (1), pp. 1-110 : 90-91

Euthria zboroviensis Friedberg, 1912

Figs 47A–B

* Euthria Zboroviensis Friedb. — Friedberg 1912: 157, pl. 9, figs 4–5.

Euthria zboroviensis Friedb. — Friedberg 1938: 139.

Euthria zboroviensis Friedberg, 1912 — Zelinskaya et al. 1968: 191, pl. 45, figs 16–17.

Euthria zboroviensis Friedberg, 1912 — Kovács & Vicián 2023: 254, figs 13J–N.

Type material. Lectotype (designated herein): specimen illustrated in Friedberg (1912: pl. 9, fig. 4), SL: 11.1 mm, MD: 6.0 mm, Dryszczów ( Ukraine); probably stored in the State Museum of Natural History of the National Academy of Sciences of Ukraine in L’viv (formerly Muzeum Dzieduszyckich) but we have no access to the collection at present. Paratypes: Friedberg (1912) mentioned 6 specimens from Dryszczów, and 10 shells from Zborów (Zboriv) ( Ukraine). Largest specimen given by Friedberg (1912): SL: 15.5 mm, MD: 8 mm.

Illustrated material. Kovács & Vicián collection: SL: 10.8 mm, MD: 5.5 mm, Letkés ( Hungary) (illustrated in Kovács & Vicián 2023: figs 13M–N), Figs 47A . SL: 15.5 mm, MD: 6.8 mm, Letkés ( Hungary) (illustrated in Kovács & Vicián 2023: figs 13J–L), Figs 47B 1 –B 3 .

Revised description. Small, broad biconic shell of up to six teleoconch whorls; apical angle 57–62°. Protoconch high conical paucispiral. Early teleoconch whorls with broad, drop-shaped axial ribs separated by slightly wider interspaces, overrun by three prominent spiral cords; fourth weaker spiral cord appears below adapical suture. Whorl profile changing from convex (first teleoconch whorl) to weakly convex, with periphery just above abapical suture (second to third teleoconch whorls) to faintly angled with steep, slightly concave subsutural ramp and prominent convexity slightly below mid-whorl on later whorls. Suture moderately incised. Axial ribs becoming broad indistinct swellings on last teleoconch whorls, most prominent along periphery. Spiral sculpture of numerous low spiral cords. Last whorl inflated, strongly convex, attaining ~70% of total height; base strongly constricted, with wide-spaced primary cords with single secondary intercalated in interspaces; fasciole weakly swollen, bearing spiral cords. Aperture moderately wide, pyriform. Columellar callus forming narrow adherent rim. Columella moderately and broadly excavated, smooth, angled at transition to siphonal canal. Anal canal indistinct; no parietal or anal denticles. Outer lip thickened by terminal varix, with several prominent, elongate denticles within. Siphonal canal moderately long, moderately narrow, slightly deflected to the left.

Discussion. Euthria zboroviensis Friedberg, 1912 is unique within the Paratethyan fauna due to its peculiar shape and cannot be confused with any other Euthria species described herein. We are also not aware of any other comparable species in the Circum-Mediterranean Region.

Paleoenvironment. Occurrences at Letkés ( Hungary) point to inner neritic environments with corals ( Kovács & Vicián 2014). The co-occurring assemblage at Zborów ( Ukraine) is also characteristic for nearshore environments (own data M.H.).

Distribution in Central Paratethys. Badenian (Middle Miocene): Polish-Ukrainian Fore-Carpathian Basin: Dryszczów, Zborów (Zboriv) ( Ukraine) ( Friedberg 1938); Pannonian Basin: Letkés ( Hungary) ( Kovács & Vicián 2023).

Figures

FIGURE 1. Measurements for shell morphology; AA: apical angle, SL: shell length, MD: maximum diameter, LWH: last whorl height, AH: aperture height, AL: aperture length, AW: aperture width.

FIGURE 3. A. Colubraria subobscura (Hoernes & Auinger, 1884), NHMW 2023/0338/0002, Lăpugiu de Sus (Romania). B. Metula kovacsi nov. sp., NHMW 1867/0019/0078, holotype, CoŞteiu de Sus (Romania). C1–C2. Metula aliceae nov. sp. NHMW 1846/0037/0277a, paratype, Baden (Austria).

FIGURE 47. Euthria zboroviensis Friedberg, 1912. A. Kovács & Vicián collection, Letkés (Hungary). B1–B3. Kovács & Vicián collection, Letkés (Hungary).