First report of a freshwater amphipod (Gammaridea: Hyalellidae), Hyalella azteca (Saussure), from nonanchihaline waters of Bermuda
The discovery of the freshwater amphipod H. azteca in Bermuda is reported. No freshwater amphipods have previously been recorded from open water pond habitats on this western Atlantic island. H. azteca in Bermuda presumably dispersed from nearby North American populations; several possible methods for dispersal are discussed. Distinctive morphological features of Bermuda H. azteca are compared with similar characters reported for other New World populations.