Packard.] 



INSECTS OF THE FOEEST. 



251 



selves, which are found from July until October. It is 

 probable that some of the flies may hibernate in tlaeir holes, 

 as they were found in the tree as late as October. By means 

 of her enormous saw or ovipositor, whicli she drives to the 

 depth of half an inch through the bark into tlie wood, the 

 female effects a safe lodgment for her eggs. They are apt 

 to be social, and one may often see large numbers of them 

 around a favorite tree, riddled with their lioles, in some place 

 previously wounded and deprived of the bark. Maples are 

 Fig. 192. Fig. 193. 



Poplar Tree Borer. 



Flea Beetle. 



sometimes killed by a beautiful ^gerian moth, which bores 

 into the living trees. 



Several of our most common and beautiful moths, as cat- 

 erpillars, prey on the maples, from the minute Thieids up to 

 the large rul)ieund Dryocampa and the lo moth (Figs. G4, 

 65). The leaves are sometimes mined by minute moths 

 allied to our clothes moths. The.sc little caterpillars are 

 often flattened and in other ways curiously adapted for their 

 life between the thin walls of tlieir abode. The number of 

 these mining moths is exceedingly great, and if any one 

 could be found to devote his leisure to rearing them, and 

 observing with care (note book in hand) their habits, he 

 would confer a benefit to science. Nowhere more than 



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