Merdigera obscura is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Enidae.
This species is present in north-western Africa and in most of Europe from Portugal to Russia.[1] [2] These terrestrial molluscs prefers shady and rocky environments in deciduous forests, at an elevation of 2000- above sea level. They can be found mainly at tree trunks, under leaf litter or stones and on walls.[1] They prefer shady and rocky environments in deciduous forests, at an elevation of 2000- above sea level. They can be found mainly at tree trunks, under leaf litter or stones and on walls.[1]
Merdigera obscura can reach a shell length of about 8.5–10.5 x 3–4 mm.[1] These shells have 6 slightly convex whorls with deep suture. The apertural margin is reflected and white, not connected by a callus or white layer at the parietal side. The shell colour is evenly brown. The surface has dense radially striations.[1]
The animal is dark brown, lighter laterally and on the foot. The upper tentacles are long, the lower tentacles length is 1/4 of upper tentacles. The animal crawls with the shell in a very high position and not much bent to the right side. Juveniles and adults often have camouflage.[1] This species is rather similar to Ena montana.
Females lay 12–20 oval eggs between May and October. Juveniles hatch after 2 weeks. Adults can be found in the first months of the second year.[1] [3]