Note the tentacles, characteristic of all Geophila. The larger upper pair bear eyes. The smaller lower tentacles are also sensory, tactile and presumably also receiving chemical stimuli. Michigan Nearly all slugs seen in urban areas in North America are introduced species, mostly from Europe. Almost invariably they are horticultural pests.
Native slugs stay in the forests, where they feed on decaying wood and leaves, and fungal hyphae.
Cryptozona belangere , Tamilnadu, southern India. The opening to the lung in this pulmonate land snail is readily evident. Also evident is the rugosity of the head-foot surface, characteristic of land pulmonate snails generally, and the pedal groove bordering the lower margin of the foot. Cryptozona belangere A common behavior of some land snails is the placing of their upper, optic tentacles on or close to the surface, presumably to receive some kind of chemical or tactile stimuli. The lower tentacles are also touching the surface, but this is more to be expected.