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Vertigo ronnebyensis
''Vertigo ronnebyensis'' is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.
== Shell description ==
The shell is deeply perforate, long-ovate, regularly finely striate, very glossy and reddish-brown in color. The shell has 5½ convex whorls. The last whorl is about equal to the penult, which is a third higher than the preceding whorl, which is double the height of the next earlier. Last whorl has a transverse callus of the same color near the aperture. Suture is very oblique, ascending to the aperture.〔
Aperture is quite obliquely piriform, excised by the very oblique parietal wall. Aperture has 4 teeth: 1 parietal lamella, 1 conic tooth at the lower end of the sharply emerging, dark-colored columella; 2 short, widely separated, deeply immersed palatal folds. Margins are delicately united, the outer margin is weakly arcuate, nearly straight, the columellar margin is broadly reflected.〔
The width of the adult shell is 1.15-1.35 mm, the height is 2.0-2.35 mm.〔(''Species summary for Vertigo ronnebyensis'' ). AnimalBase, accessed 23 June 2009.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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