Shop › Freshwater Reviews Vol 6 Issue 1 June 2013 - Family-level keys to freshwater fly (Diptera) larvae. Image 1 of 1 Freshwater Reviews Vol 6 Issue 1 June 2013 - Family-level keys to freshwater fly (Diptera) larvae. £5.00 A brief review and a key to European families avoiding use of mouthpart characters. Add To Cart Added! A brief review and a key to European families avoiding use of mouthpart characters. You Might Also Like Freshwater Megaloptera of Britain and Ireland British Fresh and Brackish Water Gastropods - SP13 Parasitic Protozoa in British Wild Animals - NO LONGER AVAILABLE A Key to the Freshwater Triclads of Britain and Ireland. - SP58 A Guide to Estimating Microbial Numbers and Biomass in fresh water - SP39