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 Investigations of Phytoplankton, with special reference to water usage - OP13 CCAP-Cryopresevation Extended Riverfly Groups Invertebrate ID Chart Measurement of Stream Water Temperature and Biological Applications to salmonid fishes, grayling and dace - OP29 Key to Freshwater Fish of Britain & Ireland