Pneumostome structure in Helix pomatia Linnaeus, 1758 and H. Lutescens Rossmassler, 1837 (Gastropoda: Pulmonata: Helicidae) - another diagnostic character
The pneumostomes in Helix pomatia Linnaeus, 1758 and H. lutescens Rossmässler, 1837 are built in a similar way, but differ in the shape of the disc between the two pneumostome lobes, thus providing another diagnostically useful character.