ROSE PESTS. 



235 



Aphides are possessed ot wonderful fecundity ; hence their 

 presence in such immense numbers on our rose bushes, 

 lliey not only suck out the sap from the cells and cripple 

 the growth- of the shoots, but also secrete a substance 

 called honeydew from cornicles, or pores, on their bodies, 

 which forms a gummy surface on the leaf and seals up 

 the breathing pores, or stomato, thus preventing healthy 

 growth taking place. 



Remedies. — It is evident that iVphides should not be 

 tolerated on rose trees if we w^ant the latter to grow and 

 flower freely. Spray, therefore, directly Aphides are de- 

 tected, with Formula No. 16 or with one of the advertised 

 insecticides. Always do the spraying in the evening. 



A. B. 



MOTTLED UMBER MOTH (HTBE.RXIA DE.F0LIARIA). 



A.'^Vinged male; B. Wingless female. 



Bedeg;uar Gall Fly (Cynips rosae). — Most people 

 have observed wliat appear to be small bunches of moss 

 enclosing rose shoots on wild and sometimes garden roses. 

 These are galk, and known as the Bedeguar Gall, or Rose 

 Bedeguar. In summer they are green, but change on 

 the approach of autumn to red. They contain grubs or 

 maggots, which change to pupae in the gall, and emerge 

 as small flies the following spring. The galls are pro- 

 duced by the irritation and stoppage to the flow of sap 

 owing to the insertion of eggs in the bark of young shoots 

 by the fly, but why the growth should take the peculiar 

 and pretty form it does is not exactly known. 



REMEDms.— Their presence is objectionable on garden 



