cab 

 FIG. 49. One of the Greatest Friends of the Forest 



Upper figure, ichneumon fly : d, as an adult fly ; a, 6, as a grub. Lower figure, 

 destruction of caterpillar by ichneumon : a, caterpillar with eggs of ichneumon 

 (white on dark area) ; 6, egg (enlarged) ; c, dark area with eggs (enlarged) ; 

 d, larvae of ichneumon feeding on pupa; e, pupa of caterpillar destroyed, 

 larvae of ichneumon in pupa state 



127 



