Insect Keys » Alfalfa Hay and Seed
     
 
     
 
C-shaped grub up to 50 mm long; brown head and three pairs of long, brown legs; no prolegs; black body contents visible through skin, especially last body segment.

  Three pairs of true legs behind head; four pairs of prolegs present (figure 3); more cylindrical, although it may curl up and appear C-shaped when disturbed; about 40 mm long.