Cover photo of Spesbona by Gregg Darling. Find the Ceres Streamjack in the FBIS database (Freshwater Biodiversity Information System) here. Family Platycnemididae Identification Very Small Size Length up to 30mm; Wingspan reaches 38mm. Both sexes of the Spesbona are dichromatic. Colouration varies according to temperature, ranging from blackish when cold to grey then blue, and … Continue reading Spesbona (Spesbona angusta)