Territorial and reproductive behavior of Calopteryx aequabilis Say (Odonata : Calopterygidae) in Nova Scotia, Canada

Territorial and reproductive behaviours of marked Calopteryx aequabilis individuals were recorded along a small first-order stream in Nova Scotia, Canada, from May 29 to August 13, 1983. Prominent agonistic behavioural sequences, such as “challenge”, “chase and escape”, “escort flight”, “circular battle” and “reverse threat”, as well as the reproductive sequences “cross display”, “courtship arc”, “mounting”, “grasping” and copulation, were described and catalogued to provide a basis for further ecological studies of Calopteryx species in the area.