Nov., 1909.] 



The Twig Girdler. 



No. of 

 Branch. 



1. . . 



2. . . 

 3.. . 



4. . . 



5. . . 



6. . . 

 7.. . 



8. .. 



9. . . 

 10. . . 



No. of 

 Eggs. 

 . . .12 



6 



11 



9 



18 

 14 



,20 



No. of 

 Branch. 



11.. 

 12. . 

 13.. 



14. . 



15. . 



16. . 

 17 . 



18. . 



19. . 



20. . 



No. of 

 Eggs. 



11 



13 



. . . . 7 



4 



8 



3 



16 



12 



6 



17 



Pupae: The eggs laid in October, 1907, have not gone into 

 the pupa state yet, May 30, 1908. Those laid in October, 1906, 

 passed into the pupa state sometime between March and May 

 of this vear. The pupae are white. They vary in length from 

 five-sixteenths to five-eighths of an inch. They lie in the gal- 

 leries which were described above. 



Adults: About the first of June adults were found nicely 

 hidden away in the galleries. On being removed to the open, 

 they flew awav with perfect ease. Further observations are 

 now being made with the hopes that more light may be thrown 

 on the daily activities of the adult form. 



In this work I received many valuable suggestions from Dr. 

 W. F. Copeland and Dr. W. F. Mercer, to both of whom I feel 

 deeply indebted. 



LITERATURE. 



texana Horn. Mississippi 



Ehn Twig-Girdler, Kansas 



1. Glexx W. Herrick. Oncideres 

 Agricultural Experiment Station Bull. 86. 



2. E. E. F.iiViLLE and P. J. P.\rrott. 

 State Agricultural College Bull. 77. 



3. A. S. Packard, ]r. Insects Injurious to Forest and Shade 

 Trees. U. S. Entomological Com. Bull. 7. 



EXPLAN.\TION OF FIGURES OF PLATES I AND II. 



Fig. 1 

 Fig. 2 

 Fig. 3 

 Fig. 4 

 Fig. 4a 

 Fig 



After Riley. 



Oncideres cingulatus. 



Elm twig. 



Hickory twigs. 



Showing the manner of cutting off the Linden branches. 



Large view showing details of ctit. 



5. Three Linden branches hanging ready to drop at the first 

 wind. 



6. Honev-locust twig. 



7. A Honey-locust shrub on North Hill, Athens, O. Forty-five 

 branches girdled. 



A Honey-locust shrub on North Hill, Athens, O. Thirteen 



branches girdled. 

 Girdled twig of Persimmon. 



Girdled Persimmon branches. Photographed near New Ply- 

 mouth, Vinton County, O. 

 Fig. 11. Girdled Persimmon branch showing transverse scars. 

 Fig. 12. Girdled Elm branch showing transverse scars. 



Fig 

 Fig 



Fig. 8. 



Fig. 9. 

 Fig. 10. 



