White pine insects 

 Imperial moth, Has! Ion a i ni p c r i a 1 i s Drury 



1 Side view of nearly full yrow n larva 



Pine bark aphid, C h c r in c s p i n i c o r t i c i s l-'itch 



2 Masses on the stem of a young pine 



White pine weevil, P i s s d il c s s t r o b i I'cck 



3 Pupal cells under bark of pine log 



4 Burrows of larvae in bark 



5 Portion of dead shoot killed !>)• the insect, showing the circular exit 



holes, the borings of the insect in the upper part and the shrunken 

 area extending down on the affected portion of the twig 



6 Pupal cells of white pine weevil within the wood, showing method of 



escape and also a few exit holes in the shrunken affected bark 



7 Adult weevil, enlarged 



LeConte's sawfly, L o p h y r u ■; 1 c c o n t c i Fitch 



8 Larvae in resting position on needles, showing below the stubs of 



devoured foliage 



Pine leaf scale insect, C !i i o n a s p i s ]> i n i f o 1 1 a e Fitch 

 q Numerous scales on pine needles 



