Species, crops and geographical distribution Slug and Snail Species Affected crops or damaged areas Occurence Deroceras sp. (garden/field slugs) Arable and vegetable crops, ornamental plants Globally in temperate climate zones Theba pisana (snail) Cereal crops and meadows Australia, Mediterranean, South Africa Helix aspersa (snail) Citrus fruits, meadowland, cereal crops, vegetable crops Globally Helix aperta (snail) Citrus fruits, meadowland, cereal crops, vegetable crops Australia Pomacea sp. (apple snails) Rice in flooded fields Asia, Central and South America Isidorella newcombi (snail) Rice in flooded fields Australia Giant African snail Horticulture Tropics globally Cerithidae sp. (snails) Fish farm ponds Asia Species Arion sp. Cernuella virgata Cerithidae sp. Cochlicella sp. Deroceras sp. Giant African Snail Helix aspersa Milax sp. Pomacea sp. Theba pisana