  
    Fig. 17. Front view of a male Uca 
    formosensis. | 
    
      
    Fig. 18. Dorsal view of a male Uca 
    formosensis. | 
  
  
    
      
    Fig. 19. 
    Front view of a female Uca formosensis. | 
    
      
    Fig. 20. Dorsal view of a female Uca 
    formosensis, a white band frequently exists on the posterior carapace. | 
  
  
    
      
    Fig. 21. Occasionally a large white area 
    extends from the middle to the anterior carapace on certain female individuals of Uca 
    formosensis. | 
    
      
    Fig. 22. The brachychelous chela (upper) 
    and leptochelous chela (bottom) of male Uca formosensis. |