Limax maximus (Linné, 1758)
Giant Garden Slug
Identification: our largest slug, 50 mm or more at maturity (although the juveniles – as pictured – are obviously smaller), dark mottling gives the appearance of lines.
Habitat: generalist, woodlands, leaf litter, woody debris (look in the crevices), moist conditions most favorable.
[left: climbing a house foundation, right: a mating pair hanging from house siding]