Gulella io is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Streptaxidae.
Distribution The non-indigenous distribution of this species includes: The Czech Republic as a "hothouse alien"Flasar I. & Kroupová V. (1976) Gulella io Verdcourt (Pulmonata, Stylommatophora) nový druh měkkýše v našich sklenících. - Živa, Academia, Praha 24(2): 65–66. (in Czech)
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