Exploring Monacha cantiana (Montagu, 1803) phylogeography: cryptic lineages and new insights into the origin of the English populations (Eupulmonata, Stylommatophora, Hygromiidae)

Shell variability in Monacha cantiana s.l. group (8–15) and Monacha parumcincta (16). CAN-1 from Valle dell’Aniene (FGC 42973) (8), Gole del Velino, near Sigillo (FGC 42960) (9), Elba Island, Sant’Ilario in Campo (FGC 23586) (10) and Valle del Turano, near Turania (FGC 42969) (11); CAN-2 from Sorgà (FGC 42964) (12); CAN-3 from Fiume Setta (FGC 42977) (13) and Breitenlee (FGC 44020) (14); CAN-4 from Vallée de Peillon, Sainte Thecle (FGC 40320) (15); PAR from La Casella (FGC 44077) (16).