(1987)
Volume
32
Part
6
Page from
339
Two species which were confused by Quick under the name Arion lusitanicus are distinguished from each other and from the other British species. Some of their external features, their eggs, the functional morphology of their genitalia, and their mating behaviour, all point to the inclusion of A.flagellus in Mesarion, and of A. lusitanicus in Arion s.s.