On the distribution of alien non-marine and estuarine macro-crustaceans in Belgium

The distributions of fifteen species of macroscopic crustaceans living in non-marine and estuarine environments in Belgium are discussed. The species in question are: the conchostracan Leptestheria dahalacensis , the amphipods Gammarus tigrinus, Echinogammarus berilloni, Dikerogammarus villosus, Corophium curvispinum, Crangonyx pseudogracilis and Orchestia cavimana , the atyid shrimp Atyaephyra desmaresti , the crayfish Astacus leptodactylus, Pacifastacus leniusculus and Orconectes limosus and the crabs Callinectes sapidus, Eriocheir sinensis and Rhithropanopeus harrisii .