Cover photo by Jean Hirons. Find the Blue Cascader in the FBIS database (Freshwater Biodiversity Information System) here. Family Libellulidae Identification Large size Length up to 54mm; Wingspan reaches 86mm. The Blue Cascader is most likely to be mistaken for one of the blue skimmers (Orthetrum spp.), which it resembles in general size, shape, and … Continue reading Blue Cascader (Zygonyx natalensis)