HOW TO DETECT OUTBKEAKS OF TXSECTS AND SAVE GRAIX. 9 



!'!<;. .">. Stages and work of the true army worm (OVp/'ii'.s- uniintni-ta ) and some of its 

 insect em-mies : '/. Parent or moth : b, full-grown larva : c, eggs ; d. pupa in soil ; e, 

 parasitic fly, Winthemia quadripustulata, laying its eggs on an army worm : /. a ground 

 lie, (.'iilnx.iiiiii caliduin, preying upon an army worm, and, at right, Calosoma larva 

 emerging from burrow : ft, a digger wasp. Fplirx sp., carrying an army worm to its 

 burrow ; h, Enicospilus purgatus, a wasplike parasite of the army worm. All about 

 natural size. 



98185 Bull. 83517 2 



