38 



N.S. ENTOMOLOGICAL SOCIETY. 



TABLE lib 

 SECOND BROOD OF EMPOA ROSAE IN SUMMER OF 1915. 



No. 

 of 

 in- 

 sect. 



Date of 

 hatching. 



Date of 

 1st moult. 



Date of 

 2nd moult. 



Date of 

 3rd moult. 



Date of 

 4th moult. 



Date of 



5th moult. 



Total 

 length 



of 

 nym- 



phal 

 stage. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



Aug. 1 . 



Aug. 1 . 



Aug. 1 . 



Aug. 1. 



Aug. 10. 



Aug. 1 . 



Aug. 8. 



Aug. 1. 



Aug. 3 . 



Aug. 3. 



Aug. 5. 



Aug. 5 . 



Aug. 5. 



Aug. 10. 



Aug. 6. 



Aug. 4 . 

 Aug. 5. 

 Aug. 3. 

 Aug. 4. 

 Aug. 13. 

 Aug. 4. 

 Aug. 11 . 

 Aug. 2. 

 Aug. 7. 

 Aug. 8. 

 Aug. 10. 

 Aug. 8. 

 Aug. 9 . 

 Aug. 14. 

 Aug. 11. 



Aug. 10. 

 Aug. 11. 

 Aug. 10. 

 Aug. 8. 

 Aug. 17. 



Aug. 16. 

 Aug. 7. 

 Aug. 10. 

 Aug. 11. 

 Aug. 14. 

 Aug. 13. 



Aug. 22. 

 Aug. 14. 



Aug. 14. 

 Aug. 14. 

 Aug. 14. 



Aug. 24. 

 Aug. 12. 

 Aug. 23. 

 Aug. 11. 

 Aug. 14. 

 Aug. 14. 



Aug. 18. 

 Aug. 15. 

 Aug. 25. 

 Aug. 18. 



Aug. 18. 

 Aug. 20. 

 Aug. 17. 



Aug. 29. 

 Aug. 16. 

 Aug. 29. 

 Aug. 14 . 

 Aug. 20. 

 Aug. 19. 



Aug. 24. 

 Aug. 21, 

 Aug. 29. 

 Aug. 23. 



Aug. 25. . 

 Aug. 26. . 

 Aug. 24. . 

 Aug. 23. . 

 Sept. 7.. 

 Aug. 24. . 

 Sept. 4. . 

 Aug. 23. . 

 Aug. 24. . 

 Aug. 25. . 

 Aug. 26. . 

 Aug. 30. . 

 Aug. 27. . 

 Sept 3.. 

 Aug. 31. . 



Days 

 24 

 25 

 23 

 22 

 28 

 23 

 27 

 23 

 21 

 22 

 21 

 25 

 22 

 24 

 25 



Injuries. The chief symptoms of leaf hopper injury is the mot- 

 tling of the leaves with yellowish spots, which may be quite conspicuous 

 in severe cases. Injury of this kind is most common on very young trees 

 or nursery stock, but is rarely so severe as the damage done to rose-bushes. 



Occasionally some damage may result as a result of the egg blisters 

 in the twigs, but the insect does not often occur in sufficient numbers 

 in Nova Scotia to cause much trouble in this way. This pest is far more 

 plentiful and injurious in the orchards of the Pacific northwest than in 

 this province. 



The Black Apple-Leaf Hopper. 



(Idiocerus fitchi, VanD.) (I. maculipennis, Fitch.) 



In the spring of the current year a number of small black leaf hopper 

 nymphs were noticed wandering over some apple twigs, that have been 

 brought into the laboratory and placed in jars of water. These were re- 

 moved and placed separately on apple seedlings for rearing. 



The following table summarizes the data secured regarding their 

 seasonal history: 



