VIII DECIDUOUS FRUIT INSECTS AND INSECTICIDES- 



Page. 

 Plate XI. Work of the peach-tree barkbeetle. Fig. 1. — Orchard severely 

 pruned April 19, 1908. Fig. 2. — Gum exuding through burrows 

 made in bark of cherry tree. Fig. 3.- — Removing stumps of trees 

 supposed to have been killed by the barkbeetle 94 



TEXT FIGURES. 



Fig. 1. The pear thrips (Euthrips pyri): Head and prothorax from side, show- 

 ing mouth parts 3 



2. The pear thrips: Eggs 6 



3. The pear thrips: Ovipositor and end of abdomen from side 7 



4. The pear thrips: Larva 8 



5. The pear thrips : N ymph or pupa 9 



6. The pear thrips: Adult 10 



7. A fungus which attacks the pear thrips: Active fruiting stage on adult 



thrips, branching mycelia, forming sjjores 14 



8. Resting spores of a fungus found within dead thrijis larva 15 



9. Trumpet leaf-miner of the apple (Tischeria malifoliella) : Adult, larva, 



pupa, details 25 



10. The lesser peach borer {Synanthedon pictipes): Adult, eggs, larva, pupa, 



cocoon, and pupal skin 35 



11. The lesser apple worm (Enarmonia prunivora): Moth, larva, cocoon, 



pupa 55 



12. The grape-leaf skeletonizer (Harrisina americana): Young larvae feeding 



on leaf 80 



13. The grape-leaf skeletonizer: Eggs on leaf, egg enlarged 81 



14. The grape-leaf skeletonizer: Larva and details 82 



15. The grape-leaf skeletonizer: Cocoon 83 



16. The grape-leaf skeletonizer: Pupa 83 



17. The grape-leaf skeletonizer: Moth 84 



18. Work of the peach-tree barkbeetle {Phloeotribus liminaris): Galleries in 



limb of peach tree 96 



19. Work of the peach-tree barkbeetle: Galleries in wood of peach tree 97 



20. The peach-tree barkbeetle: Adult, egg, larva, pupa 99 



