Paladilhiopsis (Costellina) turrita (Kuščer, 1933)

Hofman, Sebastian, Rysiewska, Aleksandra, Osikowski, Artur, Grego, Jozef, Sket, Boris, Prevorčnik, Simona, Zagmajster, Maja & Falniowski, Andrzej, 2018, Phylogenetic relationships of the Balkan Moitessieriidae (Caenogastropoda: Truncatelloidea), Zootaxa 4486 (3), pp. 311-339 : 331

Paladilhiopsis (Costellina) turrita (Kuščer, 1933)

Figs. 15–18

Costellina turrita Kuščer, 1933a: 64 ; 1933b: 140.

Costellina turrita Kuščer, 1933 — Kabat & Hershler 1993.

Material examined: MZUJ2128, MZUJ2211

Type species of monotypic genus Costellina Kuščer, 1933 .

A unique and very prominent sculpture of the teleoconch, coupled with the occurrence at one locality only, prove that we have studied topotype specimens. Anatomy of this species remains unknown. Molecular and morphological data (see above) confirm its assignment to the genus Paladilhiopsis .

This species is known only from its type locality: spring of the river Jadro , Solin , Split , Croatia. The karst spring Jadro has long been the principal water supply source for the Split town and wider surrounding area (> 300,000 inhabitants). Its precise catchment area and boundaries are still unknown despite many investigations. There is some evidence (tracing tests) that an underground connection between the neighbouring Cetina River and the spring exists ( Bonacci 2011). The spring is captured and an access to it is prohibited, which greatly hinders sampling of its fauna. No living specimens have been collected previously ( Jalžić et al. 2011), but snails are obviously present in the groundwater as a few empty shells and one live snail were successfully collected with the consent of the local authorities.

Figures

FIGURES 2–22. Shells of Iglica, Costellina, Lanzaia and Moitessieria. 2–6. Iglica cf. forumjuliana (Pollonera, 1887), cave Matešića pećina, Matešići, Slunj, Croatia; ZMUJ2114– ZMUJ2115, ZMUJ2202–ZMUJ2204. 7–10. I. cf. hauffeni (Brusina, 1886), Babja luknja near Goričane, Slovenia; ZMUJ2105–ZMUJ2106, ZMUJ2205–ZMUJ2206. 11–12. I. cf. gracilis (Clessin, 1882), Slovenia. 11. Obrežje, river Sava; ZMUJ2110. 12. Terme Čatež, Čatež ob Savi, river Sava; ZMUJ2108. 13–14. Iglica hellenica Falniowski et Sarbu, 2015, Melissotrypa Cave, Thessalia, Greece: 13. Holotype MZUJ2107. 14. Paratype, MZUJ2209, destroyed for DNA extraction. 15–18. Costellina turrita Kuščer, 1933, spring of river Jadro, Solin, Split, type locality: 15. MZUJ2128. 16. MZUJ2211. 17–18. Teloconch sculpture. 19–20. Lanzaia bosnica Bole, 1970, young specimens, Dabarska Pećina, Dabar, Bosnia and Herzegovina; ZMUJ2124. 21–22. Moitessieria sp., gravel bar, river Arga, Akerreta, Pamplona, Spain; ZMUJ2116–21117. Scale bar 1 mm for the shells, 200 µm for fig. 17 and 100 µm for fig. 18.