ICHNEUMON I'l 





larva «»f Tremex columba), whose trvae 



bore in trees. The adults are large, with a loi like 



ovipositor. En the saw-flies (Tenthredinida, 1 _. IG1 the 

 pear-sluj . - mdria cerasi) the larva 

 caterpillar, having eighl pairs of abdominal fei 



The gall-fl • - ( Fig. L68, Cynips) are small Byrnei 

 which lay eggs in the leaves or stems of the oak, i 



■ ^ 



. 



( 







rV$" 











• i . iodoma 01 Leaf cutter Am 



which, from the irritation set up by their pn 

 the swelling termed a gall. 



The ichneumon-flies (Pig. L69) are very numerous in 

 Bpecies and individuals; by their ovipositor, often 

 long, they pierce the bodies of caterpilli 3erting 



oval or many eggs into them; the larvae feed only on the 

 fatty tissues of their host, bnl this usually causes the death 

 of the caterpillar before its transformation. 



The family of ants is remarkable for the complexity of 



