Litthabitella levkadensis Jaszczyńska, 2023

Falniowski, Andrzej, Jaszczyńska, Aleksandra, Osikowski, Artur & Hofman, Sebastian, 2023, Litthabitellidae: a new family of the Truncatelloidea (Mollusca: Caenogastropoda), Journal of Natural History 57 (5 - 8), pp. 299-329 : 311-314

Litthabitella levkadensis Jaszczyńska sp. nov.

( Figure 3 (c))

urn:lsid:zoobank.org:act:714ABC27-992E-454F-B8A6-1006A5BD7D2A

Diagnosis

Shell small, ovate conical, smaller, more slender and more thin-walled than L. chilodia . H3 sequences: KY215964–KY215967; 18S sequences: KY215952.

Etymology

The specific name levkadensis reflects the geographic localisation of the type locality at the island Levkada (Levkas in dimōtiki Greek).

Type material

Holotype. GREECE: Ethanol-fixed specimen ( Figure 3 (c)); Levkas (Levkada) Island , Sivros, small spring Piges Kerasias; 38.6708°N, 20.6503°E, our locality 10 ( Figure 2 (e,f)), on the gravel and fallen leaves; September 2003; Magdalena Szarowska, Andrzej Falniowski; MNHW-1441.

Paratypes. No preserved paratypes, all specimens were destroyed for DNA extraction.

Description

Shell ( Figure 3 (c)) ovate conical up to 2.38 mm tall, growing regularly. Holotype measurements: see Table 4 . Teleoconch whorls slightly convex, evenly rounded. Aperture narrow, ovate, angled adapically, peristome continuous, in its upper part fitting tight to body whorl. Parietal lip complete, adnate, umbilicus nearly completely covered by lip. Outer lip fluted, orthocline. Shell white with very slightly marked growth lines, thin-walled and translucent. Measurements of the shell of holotype and sequenced specimens: see Table 4 .

Morphology and anatomy of soft parts. Unknown.

Remarks

Litthabitella levkadensis may represent the same species as the unnamed Lithabiella in paratypes of Schütt (1980). The p-distances for the histone H3 sequences ( Table 3 ) between L. levkadensis and each of the other three species of Litthabitella are more than twice those between these three species.

Distribution and habitat

Known from the type locality only: the small spring Piges Kerasias , Sivros, Levkada Island ( Figure 2 (e,f)) .

Figures

Figure 2. Some of the studied localities: (a) Kostanje (locality 1); (b) Trsteno (locality 5); (c) Tomići (locality 7); (d) Sotonići, spring Voda u Križan (locality 8); (e,f) Levkas Island (locality 10).

Figure 3. Holotypes of Litthabitella: (a) L. aquaadcrucem; (b) L. cetinensis; (c) L. levkadensis. Scale bar: 1 mm.