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        | Distinguishing Characteristics | 
      
      
                    
          -   Postero-lateral facets on the dorsal surface of the lorica usually open.          
 
          - No pustules present on lorica surface.
 
          - The anterior horizontal ridge of anteromedial facet is about the same length as the other ridges of the facet giving a distinctly hexagonal shape. 
 
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        | Ecology | 
      
      
                  
              - Present in lakes  from spring through fall.
 
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        | Additional Notes | 
      
      
        
          - Can be confused with Keratella hiemalis. 
 
          -  Posterior spines can vary greatly in length.
 
          - If your specimen has a much reduced second posterior spine, please compare with Keratella valga.
 
         
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        | Additional Pictures | 
      
      
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        | Quicktime Movies | 
      
      
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        | Links | 
      
      
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