Laevicaspia obventicia

Anistratenko, Vitaliy V., Neubauer, Thomas A., Anistratenko, Olga Yu., Kijashko, Pavel V. & Wesselingh, Frank P., 2021, A revision of the Pontocaspian gastropods of the subfamily Caspiinae (Caenogastropoda: Hydrobiidae), Zootaxa 4933 (2), pp. 151-197 : 186-187

Laevicaspia obventicia (Anistratenko in Anistratenko & Prisjazhnjuk, 1992) comb. n.

Fig. 19 a–e

Caspia (Clathrocaspia) obventicia Anistratenko , sp. n. —Anistratenko in Anistratenko & Prisjazhnjuk 1992: 19–20, fig. 2в.? Turricaspia obventicia (Anistratenko in Anistratenko & Prisjazhnjuk, 1992)— Wesselingh et al. 2019: 91.

Type material. Holotype only ( IZAN, unnumbered lot).

Type locality. Drilling borehole 37 near Kiliya , south of Odessa region ( Ukraine); Holocene sediments of Danube Delta ( Table 1 , locality 32) .

Other material. None.

Remarks. This species was originally attributed to the genus Caspia due to its small size and shell outline. A restudy of the holotype of Caspia obventicia suggests reallocation of this species to the Pyrgulinae . The morphology strongly reminds of the genus Laevicaspia as recently revised by Neubauer et al. (2018). Laevicaspia obventicia is known only from the holotype, therefore further field studies are required to collect material and assure its validity and distinction from the highly variable L. lincta .

Distribution. Only known in subfossil state from the type locality in the Danube Delta.

Figures

FIGURE 19. Species no longer considered Caspiinae. (a–e) Laevicaspia obventicia (Anistratenko in Anistratenko & Prisjazhnjuk, 1992), holotype (IZAN, no number). (f, g) Laevicaspia derzhavini (Logvinenko & Starobogatov, 1969), probable paratype, locality 21 (ZIN, no number). (h–k) L. derzhavini, probable paratype, locality 21 (ZIN, no number). Scale bars = 1 mm (a–c, f–j), 100 μm (d, e, k).