Soosia diodonta is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicodontidae.
Distribution The distribution of Soosia diodonta includes south-eastern Europe: Eastern Serbia Western Romania BulgariaGeorgiev D. & Stoycheva S. (2007) "A new record of Soosia diodonta (Férussac, 1821) (Gastropoda: Pulmonata: Helicodontidae) in Bulgaria". Malacologica Bohemoslovaca 6: 35–37. PDF.
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