Helicopsis striata is an interesting species. This land snail live in glacial loess steppe habitats. It lives on such habitats since ice ages. Steppes are fragmented and changed by people but this species can not live elsewhere. This means that it is a glacial relict.
It is extinct in France, it is critically endangered in Germany, in Austria, in the Czech Republic and in Slovakia. It is endangered in Poland. But it lives in large areas in Europe and it is considered as Least Concern species.
The width of the shell of this specimen is 7.5 mm and the height of the shell is 5 mm.
I have taken the previous three photos in the laboratory and the following photos in situ.
Species summary for Helicopsis striata. AnimalBase, last change 4 January 2014,accessed 29 October 2014.
Beran L., Juřičková L. & Horsák M. 2005: Mollusca (měkkýši), pp. 69-74. – In: Farkač J., Král D. & Škorpík M. [eds.], Červený seznam ohrožených druhů České republiky. Bezobratlí. Red list of threatened species in the Czech Republic. Invertebrates. – Agentura ochrany přírody a krajiny ČR, Praha, 760 pp.
Horsák M., Juřičková L. & Picka J. 2013: Měkkýši České a Slovenské republiky. Molluscs of the Czech and Slovak Republics. Kabourek, Zlín, 264 pp. (in Czech and English). pages 133-134.
von Proschwitz, T. & Neubert, E. 2013. Helicopsis striata. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 29 October 2014.
Stępczak K. Helicopsis striata (O.F. Müller, 1774). Polish Red Data Book of Animals, accessed 29 October 2014.