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Combination of apertural traits of Trochulus o. oreinos, T. o. scheerpeltzi and T. hispidus in proportion values. White bars, T. hispidus; grey bars, T. o. oreinos; black bars, T. o. scheerpeltzi. itb: internal rib, basal tooth, pale area around aperture; ib: internal rib, pale area around aperture; b: pale area around aperture; i: internal rib; n: none of these traits.
