CONTENTS 



Page. 



Introduction 65 



Injury and extent of infestation 65- 



Life history 66- 



Description 68 



Food plants 70- 



Distribution 70 



Natural enemies 70 



Remedies 71 



ILLUSTRATIONS. 



Plate IV. The woolly white-fly {Aleyrodes howurdi Quaintance) on orange. 

 Fig. 1. — Moderate infestation of leaf showing many specimens in 

 larval instars. Fig. 2. — Eggs on tender leaf. Fig. 3. — Heavy 

 infestation of leaf, showing globules of honeydew embedded in 

 woolly secretions overgrown by fungi 68 



TEXT FIGURES. 



Fig. 19. The woolly white-fly {Aleyrodes howardi): Eggs, female ovipositing.. . 67 



20. The woolly white-fly: Larva, first instar 68 



21. The woolly white-fly: Details of larva of second instar 69 



22. The woolly white-fly: Pupa-case and details 70 



III 



