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”
                                 genus
                     Sialis
            
                  “Alderflies”
               
      Genus Overview
                  
               
                        Sialids are usually found in streams, rivers or lakes where substrate is soft with detritus. They tend to have a 1-2 yr life cycle. They pupate on land in an underground chamber.  They emerge in the late spring and early summer. There are 22 species in North America.
                  
               Characteristics
                  
               POLLUTION TOLERANCE
                        Southeast: up to 7.4
                                 Upper Midwest: up to 4
                                 Midwest: up to 4.9
                                 Mid-Atlantic: up to 4
                              0 = least tolerant, 10 = most tolerant
                        FEEDING HABITS
                        
                                 Engulfer / Predator
                        
                     MOVEMENT
                        
                                 Burrower
Climber
Clinger
                        
                     Climber
Clinger
DISTRIBUTION
                        No distributions defined.
                        HABITAT
                        No habitats defined.
                        Diagnostic Characters
               order
                         
                                       
                                       
                                    1 Tail or 2 Prolegs 
                                  
                                       
                                       
                                    Lateral Filaments
                                 family
                         
                                       
                                       
                                    Lateral Filaments on 1-7
                                  
                                       
                                       
                                    Long Tail
                                 genus
                         
                                       
                                       
                                    Mandibles With Two Subapical Teeth
                                 
                  + Expanded Character List
                  
                     
               
            
                        Order:
                           Larval wings/wing pads absent. Eye spots present, but compound eyes absent. Segmented legs present on thorax. Abdominal segment 9 with either one slender tail or pair of anal prolegs, each with two hooks. Seven or eight pairs of filaments or gills laterally on abdomen, with never more than one pair per segment.
                     
                     
                        Family:
                           The mouthparts are slender, needle-like; the antennae are long and conspicuous from dorsal view; the wing membrane has 4 or 5 distinct, similar cells defined by thicker veins; found beside the water and not in it.
                     
                     
                        Genus:
                           Larvae have 7 pairs of multi segmented lateral filaments, a single long filament on the last segment, 25mm or less, mandibles with two subapical teeth.
                     
                   
                   
            Dorsal
               Ventral
               


