X SOME INSECTS INJURIOUS TO TRUCK CROPS. 



Page. 

 Fig. 9. The semitropical army worm: Work of larvae on "careless weed" in 



potato field i 59 



10. The semitropical army worm: Field of late Irish potatoes, showing 



vines entirely stripped by larvae 60 



11. The semitropical army worm: Larvae eating bark of "careless weed;" 



also nymph of spined soldier-bug (Podisus maculiventris) , predaceous 



on larvae of Prodenia eridania 61 



12. Hop flea-beetle {Psylliodes punctulata) : Larva and adult 72 



13. View of hopyard, showing how flea-beetles keep down vines 76 



14. Hop leaves, showing work of flea-beetle 77 



15. Work of flea-beetle after vines are grown 78 



16. Trained hop shoots stripped by flea-beetle 79 



17. Breeding and control cage in place over a hill 80 



18. A crew spraying hops in British Columbia 86 



19. Tarred catchers for hoj) flea-beetles 89 



