Cover photo by John Wilkinson). Find the Denim Dropwing in the FBIS database (Freshwater Biodiversity Information System) here. Family Libellulidae Identification Medium-sized Length up to 44mm; Wingspan reaches 71mm. Male Denim Dropwings are recognisable by the uniformly pale blue body colouration and contrasting dark head and eyes. The black terminal segments on the abdomen are … Continue reading Denim Dropwing (Trithemis donaldsoni)