Bythinella eleousae, Glöer & Hirschfelder, 2020

Glöer, Peter & Hirschfelder, Hans-Jürgen, 2020, Some new Bythinella spp. from southern Greece (Gastropoda: Bythinellidae), Ecologica Montenegrina 30, pp. 60-67 : 63

Bythinella eleousae n. sp. [ fig. 2.1 ]

Type locality: Greece, Phocis , Parnassus Mountains , Polidrosos , Kifisou Spring at the ruin of the Byzantine church Agia Eleousa, 1.5 km SW of Polidrosos, N 38°37'45.1" / E 22°31'12.4", 311 m a.s.l., 07.05.2017, leg. Hans-Jürgen & Andrea Hirschfelder.

Type Material: Holotype ( ZMH 140676 ): Shell height 2.95 mm, shell width 1.9 mm . Paratypes from type locality: ZMH (140677/1), coll. Hirschfelder (7 adult, 2 subadult) .

Etymology: The new species is named after the Byzantine church Agia Eleousa. The type locality is situated just below that ruin.

Description:

Shell: The shell is cylindrical with a flat apex and relatively broad. The 4.5-5 whorls are slightly convex with a clear suture. The body whorl takes about 0.75 of shell height. The aperture is ovate, with a sharp peristome. The umbilicus is slit-like. The shell is 2.8-3.1 mm high and 1.8-1.9 mm broad.

Differentiating characters: The new species exhibits the smallest length to width ratio (1.50-1.55) of all Greek Bythinella species. The most similar form is B. kwanti Glöer & Reuselaars, 2020 , from the area of Kalavrita with a ratio of 1.6. In all other species that ratio is (much) higher.

Distribution: Only known from type locality on the northern slope of the Parnassus Mountains.

Figures

Figure 2. The new Bythinella spp. from Greece. 1: Bythinella eleousae n. sp., 2: B. kastaliae n. sp., 3: B. taygetensis n. sp., 4: B. kambosensis n. sp., 5: B. alexpeteri n. sp., 6: B. ellinikae n. sp., 7: B. amira n. sp., 8: B. kithiraensis n. sp.