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 Eutrophication - SPEC3 Key to Freshwater Fish of Britain & Ireland Desmids of the English Lake District. - SP42 Key to the Adults & Nymphs of British Stoneflies - SP17 Guide to Freshwater Invertebrates - SP68