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Cepaea nemoralis is among the largest and, because of its bright colouration, one of the best-known snails in Western Europe. [6] The colour of the shell is highly variable; it ranges from brown, through pink, to yellow or even whitish, with or without one to five dark-brown bands. [8]
Cepaea is a genus of large air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Helicidae. The shells are often brightly coloured and patterned with brown stripes. The two species in this genus, C. nemoralis and C. hortensis, are
Cepaea hortensis has a shell up to 22 mm (1 in) in diameter, tending to be slightly smaller than C. nemoralis. The umbilicus is closed in adults, but narrowly open in juveniles. [ 2 ] Although the shells of C. hortensis are most commonly yellow, they exhibit a range of background colours from brown through pink to pale yellow, and up to five ...
The shell is white with reddish-brown spiral bands, and measures about 26 to 35 millimetres (1 to 1 + 3 ⁄ 8 in) in diameter. Iberus alonensis, the Spanish vaqueta or serrana, measures about 30 millimetres (1 + 1 ⁄ 8 in) across the shell. Cepaea nemoralis
The shells are usually flattened or depressed conical. Globular shells are found in the genera Helix, Maltzanella, Lindholmia, Cornu, Cantareus, Eremina, and Idiomella. One species, Cylindrus obtusus, has a cylindrical shell. In some genera, especially in Cepaea, the shells are brightly colored and patterned.
The grove snail, Cepaea nemoralis, is famous for the rich polymorphism of its shell. The system is controlled by a series of multiple alleles. Unbanded is the top dominant trait, and the forms of banding are controlled by modifier genes (see epistasis). Grove snail, dark yellow shell with single band
From the genus Cepaea: Cepaea nemoralis, grove snail, known as rayado ('striped' snail) in Spain; Cepaea hortensis, white-lipped snail; From the genus Otala: Otala punctata, known as cabrilla in Spain, are bigger; Otala lactea, Spanish snail; From the genus Pomacea:
Shell: Snail shells are mainly composed of a mixture of proteins called conchin, and calcium carbonate. Conchin is the main component in the outer layer of the shell, known as the periostracum . The inner layers of the shell are composed of a network of calcium carbonate, conchin, and different mineral salts.