160 



GARDEN FOES. 



on the stems of tlie plant, and the maggots appear a fort- 

 night afterwards. 



Remedies. — Pull up and burn all plants that show signs 

 of attack by drooping. As a preventive, apply a dressing 

 of Apterite, Cliffs Powder Insecticide, Kilogrub, or Vapo- 

 rite, digging this well into the soil before planting. The 

 gas emitted will asphyxiate the pupa?, and prevent them 

 developing into flies later on. 



Cabbag^e Powdered-wing: Fly (Aleyrodes pro- 

 letella). — This fly attacks all the members of the cabbage 



OARROr FLY AND LARVA. 



References: 1, Root infeefxl with maggots; 2, Maggots in root; 4 and 6, 

 Larva;; 7 and 8, Pupae; 9 and 11, Fly. 



family by congregating on the under sides of the leaves 

 and sucking out the sap from the cells. Plants attacked 

 turn yellow or brown in their foliage. The young insects 

 are covered with small scales, and adhere firmly to the 

 leaf. When they reach maturity they have white wings, 

 .and float in the air like tiny snowflakes. 



Remedies. — The best remedy is to remove the leaves 

 containing the young insects and burn them. Where the 

 insects can be readily reached spray with the solution 

 advised for Cabbage Aphis. 



Carrot Fly (Psila rosa?). — The maggot or grub of this 

 fly is respoi)sil)le for the form:iti(Mi of the rusty patches on 



