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SEVENTEENTH Report STATE ENToMoLoGIsT oF MrINnNEsoTA—1918 
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TIS? DUR oto 
PLATE IV 
Naked egg. x17 
Begg coated with flour. x17. 
Heads of larvae of first, second, third, fourth and fifth instars. 
Mature larva of the sixth instar. x17 
Larval leg. 
Female pupa and terminal segments of male pupa. x17. 
Adult Tribolium confuswm Duval. x17, 
Self 
