The aquatic Megaloptera and Neuroptera (alderflies, lacewings and spongeflies) are fascinating and important elements of the freshwater fauna. Their low species diversity - three families and seven species in Britain and Ireland - belies their ecological importance, while their distinctive appearance ensures that they are unlikely to be overlooked.
The FBA has long ensured that these small groups are identifiable. This is, however, more than simply a key to identification, with an updated section on life cycles and ecology summarising our knowledge of these fascinating animals and including a comprehensive reference list should further information be required.