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FLORIDA ENTOMOLOGIST 
Official Organ of The Florida Entomological Society, Gainesville, 
Florida. 
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LIFE HISTORY OF THE NEW CITRUS APHIS 
A. H. BEYER, 
Assistant Entomologist, 
Experiment Station 
The life history studies of this species have been somewhat 
complicated because of its alternate host plants. 
We have carried on generation studies from May 2d to June 
20th in the field, at Lakeland, Florida. Since that time these 
studies have been transferred to Gainesville, where they are now 
being conducted. A summary of these studies thus far gives the 
following results. 
Viviperous females were used in starting these studies as no 
eggs or stem mothers were found. The reproductive period of 
the female varied, during the time of these studies, from 2 to 11 
days, with an average of five young per day. The longevity of 
the females used ranged from 3 to 21 days. In most cases death 
was due to natural causes. We must, however, take into con- 
sideration the conditions of temperature and humidity which 
would have some influence on the mortality, as the experiments 
were conducted under a tent where the temperature ranged from 
85 to 98 degrees. 
The maximum number of young produced by a single female 
was 61, and the minimum was 8. The birth rate was highest 
in the early life of the female and the largest number of young 
were brought forth during the morning hours. The percentage 
of winged individuals produced during this series of experiments 
ranged from 45 to 69. 
DESCRIPTION 
Alate Viviperous Female. Eyes carmen; body rather long and 
plump; head normal, dark; antennae shorter than body, reaching 
