Cover photo by Corrie du Toit. Find the Blue Emperor in the FBIS database (Freshwater Biodiversity Information System) here. Family Aeshnidae Identification Very large Length up to 79mm; Wingspan attains 110mm. Both sexes of the Blue Emperor are distinctive and unmistakable in Southern Africa. In males, the combination of large size, apple-green thorax, blue eyes, … Continue reading Blue Emperor (Anax imperator)