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pp.423-428
The species of land snails (Stylommatophora) that feed on perilla plants were observed under leaf perilla greenhouses cultivated in the Milyang and Busan areas. Four species of land snails were recorded. Among them, three species were slugs, Meghimatium bilineatum in Phlomycidae, Deroceras reticulatum, and Limax marginatus in Limacidae, and one species was the snail Acusta despecta sieboldiana in Bradybaenidae. D. reticulatum occurred most frequently followed by A. despecta sieboldiana, L. marginatus and M. bilineatum. Annually, land snails showed two peaks in the middle of April and in late November for D. reticulatum, early May to middle November for A. despecta sieboldiana, and middle April and early November for L. marginatus. M. bilineatum, however, did not show any clear peak because of its low population occurrence.
