6 WHITE FLIES INJURIOUS TO CITRUS IN FLORIDA. 
The citrus white fly—Continued. : Page. 
Life history and habits—Continued. 
The egg—Continued. 
Parthenogenesis... ... 2 i< 92 S32) epee eee Oe eee nossa = 57 
Hatching... ..2):2 \c. ectaes ee oe  ee ae es 57 
The larval and pupal! stages?= 225225. sens ae ee ee eee 58 
Description of stages: :3..te<22> ese eee eee ese eee eee 58 
Duration. of stages... «= 3:22.02. Betens See ae 62 
Locomotion..<..:.2.2 ees Bae ee 63 
Growtheeesn cee eee ooo S ie eerie Sere As As eee ee 64 
Moltay sc cccc nc cceiden Sa Be he oe eis ae a eae Ee ee eee 64 
Feeding habits of larvee'and pupre:<..20- -- 2-6. ee eee 65 
The adult... 2.0.02 0 eek 2 toe ate woe Soe ee 65 
Description .. ..020- 0802 22525: = Ses ee eS ae eee 66 
IMeErg ele Wi. 52. so o5 ee eee ne ee See ee ee eee aa eee 67 
Duration of life. -..-2is.42. -- Ss os So eee 71 
Mating... - sie) siebRds Selec eeleieie the eles tale eee ee 71 
Oviposition =... s2222. 0. seen edn: obec eee eee ee 72 
Proportion:of Sexes: seine... ce ooo eee eee ee eee eee 77 
Influence of weather conditions on acnetie of adults. 220 oases 78 
Feeding habits of adiilte!- 2-0 ae oo ee eee SEER te Sea Ze 78 
Multiplication. 2.22025 520 05 ae ok ee en ee ee aes 79 
Length of ‘life:cycles =. e-aac ene: oe ee ee eee 80 
Seasortal history's 220 sesss5- ca ese ee oe 81 
Generations of the ‘citrus white fly 2-2<--2 .m2--ees: = see eee 81 
Seasonal fluctuations in the numbers of adults or so-called ‘‘broods”.. 84 
The cloudy-winged white fly (Aleyrodes nubifera Berger).............-------- 86 
12 L120) 9 eae ern aT eee Me ee ED A sada ane boticecss- 86 
Amount of injury by the cloudy-winged white fly.....................-. 87 
Distribution. . <2 5-5 2.2... ase ae Se ee eee 89 
Pood plantss< <<. sssec iS o8 oe cei eee EE eee ae 90 
OPread ees see nas! ee Se een he Ree Ae nto Ro itae Sond at 90 
Life history and habits wine o's SSE lees Ree ee oe ee a 91 
THE CG2. .. 0 5c2 5.0. Ss abo ee ate ene Set ee ee ee 91 
The larval and pupal stages. a22--22-e ee ee eee ee ee 94 
The adult. ..... Be ye Bee Seee aoe Bee ek seta + eee 98 
Length of life cycle... [22.5..550 sane col ee ee eee 100 
Seasonal history... «..ssncscesdscee coe ema oe eee aero ae ee 101 
Generations of the cloudy-winged white fly................---.------ 101 
Seasonal fluctuations in numbers of adults or so-called ‘‘broods”.....- 102 
INdeX. |. os sects ol elk es ec ee oe ee ee 105 
