6 WHITE FLIES INJURIOUS TO CITRUS IN FLORIDA. 
The citrus white fly — Continued. Page. 
Life history and habits — Continued. 
The egg — Continued. 
Parthenogenesis 57 
Hatching 57 
The larval and pupal stages 58 
Description of stages 58 
Duration of stages 62 
Locomotion 63 
Growth 64 
Molts 64 
Feeding habits of larvae and pupae 65 
The adult 65 
Description 6£ 
Emergence 67 
Duration of life 71 
Mating 71 
Oviposition 72 
Proportion of sexes 77 
Influence of weather conditions on activity of adults 78 
Feeding habits of adults 78 
Multiplication 79 
Length of life cycle 80 
Seasonal history 81 
Generations of the citrus white fly 81 
Seasonal fluctuations in the numbers of adults or so-called "broods".. 84 
The cloudy- winged white fly (Aleyrodes nubifera Berger) 86 
History 86 
Amount of injury by the cloudy-winged white fly 87 
Distribution 89 
Food plants 90 
Spread 90 
Life history and habits 91 
The egg 91 
The larval and pupal stages 94 
The adult 98 
Length of life cycle 100 
Seasonal history 101 
Generations of the cloudy-winged white fly 101 
Seasonal fluctuations in numbers of adults or so-called "broods " 102 
Index 105 
