![]() ![]() Slugs are able to crawl over the sharp edge of a razor blade without harm. Slugs and snails leave silvery slime trails on the ground and over plants. Slugs and snails are usually nocturnal so their damage is noticed before the pests are. Eradication and control of slugs and snails is difficult and costly. In many places, slugs and snails have caused as much damage as insect pests. The introduced slugs and snails are usually gregarious and may cause serious damage as they build up large populations in a local area. With few exceptions, native species are solitary in habit and do little or no damage. Most of these have been introduced accidentally. Slugs and snails are in a subgroup called the Gastropoda, the members of which have a head, a ventral muscular foot, and a shell (internal in slugs and external on snails).Īpproximately 725 species of land snails and about 40 species of slugs are now known from North America. Their damage to ornamental plants resembles that done by caterpillars or wireworms. ![]() The slugs and snails are much like some insects in their biology. Mollusks are a large and diverse group of animals of worldwide distribution. Slugs and snails belong to the phylum Mollusca and are more closely related to octopi than insects. ![]()
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