RM
Garden slug and field slug feeding on fallen apple
Slugs eating apple. A pair of slugs munch their way through a fallen apple. The black one is a garden slug, Arion hortensis. The pale one is the netted slug (or field slug), Deroceras reticula- tum. These two species are common pests of garden plants and agricultural crops respectively. Like snails, to which they are closely related, slugs are hermaphrodites. They mate by writhing over each other and exchanging sperm, before parting to lay eggs. The retractable antennae, seen here on the black slug's head, contain eyes at their tips. The raised patch on the black slug's back is its mantle, which is where a shell would grow if this was a snail.
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