116 DESTRUCTIVE INSECTS OF VICTORIA: 



PLATE Lir. 



The ''Gum Saw Fly'' (Perga dorsalis, Leach). 

 Fig. 

 L Gum branch, showing cluster of larvce. Natural size. From 

 nature. 



2. Cluster of cocoons, side and upper view. Reduced, From nature. 



3. Perfect insect. Natural size. From nature. 



4. Perfect insect. Natural size. From nature. 



5. " Saw " of female. Magnified. From nature. 



6 & 7. Larva and pupa of Dipterous fly which attacks cocoons of 

 this insect. Reduced. From nature. 



