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 An illustrated key to Freshwater and Soil Amoebae - SP34 Extended Riverfly Groups Invertebrate ID Chart Key to the Case Bearing Caddis Larvae - *NEW REPRINT* - SP61 Environmental Effects of Cadmium in Freshwater - OP23 Turbulence in Lakes & Rivers - SP29