original description
(of Arion occultus R. Anderson, 2004) Anderson, R. (2004). Arion occultus n. sp, a new slug of subgenus Kobeltia Seibert (Pulmonata: Arionidae) from Ireland. Journal of Conchology, 38 (4): 341-353. London.
page(s): 343. [details]
basis of record
Rowson, B., Turner, J., Anderson, R. & Symondson, B. (2014). Slugs of Britain and Ireland. Identification, understanding and control. FSC Publications: Telford UK.
page(s): 54. [details]
additional source
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]
From editor or global species database