order
                        
                      
                                    Coleoptera
                                       “Adult Beetles”
                                  
                                    Coleoptera
                                       “Larval Beetles”
                                  
                                    Diptera
                                       “True Flies”
                                  
                                    Ephemeroptera
                                       “Mayflies”
                                  
                                    Hemiptera
                                       “True Bugs”
                                  
                                    Lepidoptera
                                       “Aquatic Caterpillars, Snout Moths”
                                  
                                    Megaloptera
                                       “Alderflies, Dobsonflies, and Fishflies”
                                  
                                    Odonata
                                       “Dragonflies and Damselflies”
                                  
                                    Plecoptera
                                       “Stoneflies”
                                  
                                    Trichoptera
                                       “Caddisflies”
                                 family
                        
                     Potamanthidae
               
            genus
                     Anthopotamus
            
                  “Hackle-gills”
               
      Genus Overview
                  
               
                        4 species in North America.  Species identification requires mature larvae with large tusks.  This is the only genus in the family, Potamanthidae.
                  
               Characteristics
                  
               POLLUTION TOLERANCE
                        Southeast: 1.6 and higher
                                 Upper Midwest: 4 and higher
                                 Midwest: 3.2 and higher
                              0 = least tolerant, 10 = most tolerant
                        FEEDING HABITS
                        
                                 Collector / Filterer
                        
                     MOVEMENT
                        
                                 Burrower
                        
                     DISTRIBUTION
                        
                                 Widespread (east of the Rocky Mtns.)
                        
                     HABITAT
                        
                                 Lotic-depositional
                        
                     Diagnostic Characters
               order
                         
                                       
                                       
                                    Abdominal Gills
                                  
                                       
                                       
                                    Single Tarsal Claw
                                  
                                       
                                       
                                    Usually 3 Tails
                                 family
                         
                                       
                                       
                                    Gills on 2-7 Forked, Long, Projecting Laterad
                                  
                                       
                                       
                                    Legs Slender
                                  
                                       
                                       
                                    Long Tusks
                                 
                  + Expanded Character List
                  
                     
               
            
                        Order:
                           Wings developing in wing pads. Mouthparts suitable for chewing. Gills present on tops and sides of abdomen. Segmented legs present. One tarsal claw per leg. Usually with 3 tails (sometimes 2).
                     
                     
                        Family:
                           Long slender mayfly with its gills long, forked, marginally fringed, and projecting laterad; pair of sharp tusks projecting beyond head; the legs are not unusually thick and flattened for digging.
                     
                     
                        Genus:
                           Flat bodied, long prothoracic legs, tusks are flatten
                     
                   
                   
            Dorsal
               Ventral
               


