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SCHOOL ENTOMOLOGY 



ally and have very long, thread-like ovipositors. The 

 larger forms parasitize caterpillars and other larvae and pupae. 



One, possibly the most 

 remarkable form in 

 the group, has an ovi- 

 positor several inches 

 in length with which 

 it bores through solid 

 wood to deposit its 

 eggs in the galleries 

 of the horn tail-larvae 



rp (page 154), which it 

 parasitizes and kills. 

 Members of the fam- 

 ily Braconidce may 

 attack caterpillars 

 and, when full grown, 



A form small silken co- 



coons on the outside 

 of the body of the 

 host. Others in the 

 same family pupate 

 within the host. One 

 sub-family confines its 

 attention almost ex- 

 clusively to the plant- 

 lice and scarcely a spe- 

 cies of these insects 

 has not one or more parasites belonging to this sub-family. 



In the super-family Proctrypoidea, we find the smallest 

 of the parasites and among the smallest of insects. Here 

 are found the egg parasites and some of numerous parasites 

 of the scale insects. 





FIG. 115. Parasitic Hymenop'era. Note 

 parasitized cocoon and mass of pupae. 

 Reduced about one-half. 



