Notes on the occurrence of Talitrus dorrieni Hunt (Crustacea Amphipoda: Talitridae) in south-west England

Summary

The introduced amphipod crustacean Talitrus dorrieni is abundant in terrestrial localities on the Isles of Scilly, and has been found in three previously unrecorded localities in Cornwall. Although widespread on the islands, it is restricted to gardens and cultivated ground on the mainland. The origin of the colonies and the factors limiting their spread are discussed.