GARDEN PESTS IN N E W ZEALAND 



The winter is passed by the insect in almost a mature state ; on the 

 advent of spring, development to maturity continues, when, after mating, 

 the females give birth to living young over a period of several weeks. 

 The young reach maturity and commence to reproduce five to six weeks 

 from birth, there being several generations in the course of a season. 

 The average number of young produced by each female has been found 

 to be about 400. 



FIG. 7. 



(1) Colden Oak Scale; (2) Apple Mussel Scale; (8) Black Scale; (4) Cabbage Tree 



Scale; (5) San Jose Scale; (6) Apple Mussel Scale; (7) Oleander Scale; 



(8) and (9) Rose Scale. 



Photographs by W. C. Davies, Cawthron Institute? 



39 



