Calopterygidae (Broad-winged Damselflies, Jewelwings or Demoiselles) are large, metallic coloured damselflies with broad, often conspicuously coloured wings. Nymphs inhabit streams and rivers and have long legs and antennae. The family contains only one genus in Europe (Calopteryx) with 4 species. Males are fiercely territorial and display courtship behaviour.
No pictures (yet):
Calopteryx xanthostoma – Western Demoiselle