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
                        
                     Coenagrionidae
               
            
               “American Bluets”
            
      Genus Overview
                  
               
                        38 species in North America. Enallagma is a difficult genus to identify as larvae despite the numerous species.  It is very similar to Coenagrion and Ischnura.
                  
               Characteristics
                  
               POLLUTION TOLERANCE
                        Southeast: up to 9
                                 Upper Midwest: up to 9
                                 Mid-Atlantic: up to 8
                              0 = least tolerant, 10 = most tolerant
                        FEEDING HABITS
                        
                                 Engulfer / Predator
                        
                     MOVEMENT
                        
                                 Climber
                        
                     DISTRIBUTION
                        
                                 Widespread (east of the Rocky Mtns.)
                        
                     HABITAT
                        
                                 Lentic-littoral
Lotic-depositional
                        
                     Lotic-depositional
Diagnostic Characters
               order
                         
                                       
                                       
                                    Abdomen with 5 Sharp Stiff Points or 3 Gills
                                  
                                       
                                       
                                    Labial Mask
                                  
                                       
                                       
                                    Two Pairs of Wing Pads
                                 family
                         
                                       
                                       
                                    3 Tracheal Gills
                                  
                                       
                                       
                                    Antennal Segment 1 Short
                                  
                                       
                                       
                                    Mask without Cleft
                                 
                  + Expanded Character List
                  
                     
               
            
                        Order:
                           Nymph with mask-like labium below chewing mouthparts. Wings developing in wing pads. Segmented legs present, each with two claws. 
                     
                     
                        Family:
                           Zygoptera (slender body shape with head wider than thorax and abdomen, and with 3 long feather-like gills at posterior end). Antennal segment 1 much shorter than rest of its antenna. Pair of lobes at distal end of labral mask each with 0–6 setae, but attached moveable hook without setae. Ligula (distal part of palm of mask) usually without median cleft, mask roughly triangular or square (not stalked as in Lestidae). Each side of median line with either 0, 1, or 3–5, dorsal premental setae (hairs inside the palm of the mask). Mature larvae 13–25 mm long.
                     
                     
                        Genus:
                           Posterior margin of head rounded, antennal segments 6, careful identifical is needed
                     
                   
                   
            Dorsal
               Ventral
               


