Insect Keys » Alfalfa Hay and Seed
     
 
     
 
Active insects; adults light-green to dark brown; 6 to 7 mm long with a yellow triangle or "V" on back; nymphs wingless, green with black spots on back.

  Smaller insects, slow moving; body teardrop or football-shaped with cornicles (figure 7) projecting backward from rear of abdomen; aphids.