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
                        
                     Brachycentridae
               
            genus
                        
                     Micrasema
            
                  “Humpless Casemaker Caddisflies”
               
      Genus Overview
                  
               No genus-level description defined.
                  Characteristics
                  
               POLLUTION TOLERANCE
                        Southeast: 0
                                 Upper Midwest: 2
                                 Mid-Atlantic: 2
                              0 = least tolerant, 10 = most tolerant
                        FEEDING HABITS
                        
                                 Collector / Gatherer
Shredder / Herbivore
                        
                     Shredder / Herbivore
MOVEMENT
                        
                                 Clinger
Sprawler
                        
                     Sprawler
DISTRIBUTION
                        
                                 Widespread (east of the Rocky Mtns.)
                        
                     HABITAT
                        
                                 Lotic-erosional
                        
                     Diagnostic Characters
               order
                         
                                       
                                       
                                    Prolegs With Single Hook
                                 family
                         
                                       
                                       
                                    Mesonotum sclerotized
                                  
                                       
                                       
                                    Metanotum mostly membranous
                                  
                                       
                                       
                                    Humpless abdominal segment I
                                  
                                       
                                       
                                    Transversely arranged plant-material case
                                 
                  + Expanded Character List
                  
                     
               
            
                        Order:
                           Larvae: Wings/wing pads absent. Eye spots present, but compound eyes absent. Antennae usually small, inconspicuous. Three pairs of segmented legs present on thorax. Pair of anal prolegs, each with single hook, located on last abdominal segment. Larvae can be free-living, in silken retreats attached to substrate, or in usually-portable tubes or cases made of sand, rocks, or plant material.
                     
                     
                        Family:
                           The larva lives in a case that is square or round in cross-section and usually made of plant pieces that are mostly transversely oriented; the tops of the first two thoracic segments are covered by sclerites; the top of the third thoracic segment has only a few small sclerites; the dorsal and pair of lateral spacing humps (usually present on the first abdominal segment of case-making caddisflies) are absent; anal prolegs are mostly fused with the end of the abdomen except their apical hooks.
                     
                     
                        Genus:
                           Not defined.
                     
                   
                   
                   
                   
            Dorsal
               Lateral
               Ventral
               Case
               


