Species Detail - Arion (Mesarion) - Species information displayed is based on the dataset "All Ireland Non-Marine Molluscan Database".
Terrestrial Map - 10kmDistribution of the number of records recorded within each 10km grid square (ITM).
Marine Map - 50kmDistribution of the number of records recorded within each 50km grid square (WGS84).
P. Hesse, 1926
14 April (recorded in 1968)
9 November (recorded in 1966)
Conchological Society of Great Britain and Ireland, All Ireland Non-Marine Molluscan Database, National Biodiversity Data Centre, Ireland, Arion (Mesarion), accessed 18 October 2019, <https://maps.biodiversityireland.ie/Dataset/1/Species/123810>