Species diversity of terrestrial mollusks in Shemiranat County, Tehran Province with introducing four new species for Iranian fauna.

This study was designed to investigate about species diversity of soil mollusks in Shemiranat county. The country was divided into 10 sampling stations and the collected samples were identified morphologically and systematically according to the certified identification keys. Results showed the significant effect of temperature and relative humidity on the abundance of the soil mollusks. There were no samples collected in cold months, but in warm seasons, August had the most numerous samples, and March showed the lowest abundance. In this study, a total of 94 samples belonging to 10 species under 9 genera and 8 families were identified as follows: Helix lucorum (Helicidae), Cernuella neglecta, Monacha cantiana and M. parumcincta (Hygromidae), Succinea putris (Succineidae), Chondrula tridens (Enidae), Planorbis intermixtus (Planorbidae), Deroceras tritulatum (Agriolimacidae), Ambigolimax valentianus (Limacidae) and Arion fuscus (Arionidae). P. intermixtus was the most abundant species among the collected samples and S. putris had the lowest density. [ABSTRACT FROM AUTHOR]