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INSECTS INJURIOUS TO THE RASPBERRY. 



By W. Saunders, London, Ontario. 



1. The Raspberry Rootgall Fly (lihodites radi- 



cum, Osten Sacken). 



2. The Red necked Agrilus (Agrilus ruficollis, 



Fab.). 



3. The Raspberry Cane Borer (Oberea tripunc- 



tata, Fab.). 



4. The Tree Cricket {CEniveus canthus, Serv.). 



5. The Pale Brown Byturus {Bijturus unicolor, 



Say). 



6. The Raspberry Saw-fly {Selandria rubi, Har- 



ris). 



7. The Raspberry Acrony eta {AcronydavenilUi, 



Grote and Rob.). 



8. The Fall Web Worm (Hyphantria textor, 



Harris). 



9. The Oblique Banded Leaf -roller (Lozotcenia 



rosaceana, Harris). 



10. The Raspberry Plume Moth (Pterophorus 

 



11. The Cucumber Flea Beetle {E[aUica[Crepid- 

 odera] ciicumeris, Harris). 



12. The Raspberry Geometer (Aplodes ruhivorGf 

 Riley). 



13. The Flea-like Negro Bug {CorimeUjena 

 Fulicaria, Germ). 



While the wild raspberries in most sections of our country, owing to the gradual clearing 

 up of the lands, are yearly becoming scarcer, the cultivation of the better hardy sorts is on the 

 increase, and will doubtless continue to extend in a ratio corresponding to the lessening sup- 

 ply of the wild fruit. In the natural state the individual plants of the raspberry are compar- 

 atively scattered and wide spread, in a cultivated one compact and thickly growing ; and as 

 this latter condition is much more favourable to the increase and spread of insect life, we may 

 expect to hear in the future much more of " Insects Injurious to the Raspberry" than we have 

 heard in the past. Hence an acquaintance with our foes present and prospective, and the best 

 methods of successfully contending with them, will not be amiss, and in some measure to meet 

 this want the present paper is offered. 



AFFECTING THE ROOTS. 



1. The Raspberry Root Gall Fly {Rhodites radicum, Osten Sacken). 



This is the only insect which has thus far been found injuring the roots of the Rasp- 

 i^'iG- 1- berry. It is a small fly which produces a swelling or gall on the 



root, and although we have not yet heard of the work of this 

 insect appearing anywhere in Ontario, it will in all probability be 

 found here as it is common in Massachusetts and also in the 

 Western States ; hence as one of our prospective foes we shall 

 devote a small space to it. 



Figure 1 gives a good representation of one of these galls, 

 which was found on the roots of a raspberry bush. The swelling 

 is composed of a yellowish pithy substance, scattered throughout 

 which are a number of cells, and in these are enclosed small white 

 larvae, the progeny of the little fly. These soon change to chry- 

 salides, and the latter in turn in a short time produce the perfect 

 insects, which eat their way out through the substance of the gall, 

 leaving small holes to mark their phice of exit. This same insect 

 attacks sometimes the roots of Rose-bushes. 



Whenever and wherever these swellings or excrescences are 

 found, they should at once be committed to the flames. 



Colour Brown. ' *' 



