06 Marsenia perspicua

06 Marsenia perspicua

Exceptionally large specimen; body-length 30mm, shell-length 19mm. Body usually up to 20mm (Graham, 1988). The later parts of the shell are somewhat distorted, and the profile in this view is higher than usual. Colour and patterning of bodies are extremely variable; ground colours include the lilac-grey of this specimen which is never found on Lamellaria latens.  Body length 30 mm. Llŷn, Caerns., Wales. March 2016.