Merdigera obscura
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Merdigera obscura is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Enidae.
Distribution and habitat
This species is present in north-western Africa and in most of Europe from Portugal to Russia.[1][2][3] These terrestrial molluscs prefers shady and rocky environments in deciduous forests, at an elevation of Script error: No such module "convert". above sea level. They can be found mainly at tree trunks, under leaf litter or stones and on walls.[2] They prefer shady and rocky environments in deciduous forests, at an elevation of Script error: No such module "convert". above sea level. They can be found mainly at tree trunks, under leaf litter or stones and on walls.[2]
Description
Merdigera obscura can reach a shell length of about 8.5–10.5 x 3–4 mm.[2] 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.[2]
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.[2] This species is rather similar to Ena montana.
Biology
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.[2][4]
See also
- List of non-marine molluscs of the Czech Republic
- List of non-marine molluscs of Ukraine[5]
- List of non-marine molluscs of Great Britain
- List of non-marine molluscs of Ireland
Bibliography
- Anderson, R. 2005. An Annotated List of the Non-Marine Mollusca of Britain and Ireland. InvertebrateIreland Online, Ulster Museum, Belfast and National Museum of Ireland, Dublin
- Kerney, M, 1999, Atlas of the Land and Freshwater Molluscs of Britain and Ireland, Harley Books,
References
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- ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ a b c d e f g Animal Base
- ↑ IUCN
- ↑ iNaturalist
- ↑ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
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