These snails came with lavender (Lavandula sp.) imported from Italy to Norway. The snails are certainly not a species native to Norway. Due to the size and my initial impression, my first thought was Cornu aspersum, which is recently introduced here, but these have different patterns than the ones we typically see. I'm aware that most snails vary considerably in colour and patterns. The neat Cepaea-like lines on the underside of one threw me off particularly. The largest one is approximately 26 mm wide and 18 mm tall. The smallest is around 16 mm wide and 11 mm tall. My guess is that the smaller one is a juvenile specimen. The smaller one is also slightly damaged, which I believe is why it seems to have an open umbilicus.
Edit: They might be Eobania vermiculata. Can anyone confirm?
I might have figured it out myself; Eobania vermiculata (/Massylaea vermiculata).
Thank you Andrew Paul McKenzie Pegman and Enrico Talenti !
This species is not (yet) established in Norway. It might be too cold for them here, but there are some warmer locations in the south where they could possibly survive. I think I will dissect out the love darts /gypsobelum and keep them with the shells for future reference.
Yes, It's M. vermiculata.
Even in Italy it's not often found in the north. It prefers a more mediterranean environment and climate.
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