THE TRUE ARMY WORM AND ITS CONTROL. 33 
re. 2: 
Stages and work of the true army worm and some of its insect enemies: a, 
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; f, a ground beetle, 
Calosoma calidum, preying upon an army worm, and, at right, Calosoma larva 
emerging from burrow; g, a digger wasp, Sphex sp., carrying an army worm to its 
burrow ; h, Hnicospilus purgatus, a wasplike parasite of the army worm. All about 
natural size. (Original.) 
