16 * WHITE FLIES INJURIOUS TO CITRUS IN FLORIDA. 
In Louisiana the demand for information concerning the citrus 
white fly has resulted in a publication on this subject by Mr. A. H. 
Rosenfeld in 1907.1. The discovery of the white fly in California in 
the same year led to the publication, by Prof. C. W. Woodworth, of a 
circular of general information,’ and of a second circular*® dealing 
with the methods of eradication that were being employed in that 
State. A very complete account of the white-fly infestation in Cali- 
fornia was given by Mr. C. L. Marlatt, assistant entomologist of the 
Bureau of Entomology, before the Entomological Society of Wash- 
ington.* 
The foregoing paragraphs refer to the principal publications in 
which the citrus white fly is treated, exclusive of short papers in hor- 
ticultural periodicals, press bulletins, experiment station reports, and 
transactions of the Florida State Horticultural Society. Numerous 
press bulletins have been issued by the Florida State Experiment Sta- 
tion dealing with several phases of white-fly control and written from 
time to time as the occasion demanded by Prof. Gossard, Dr. Sellards, 
Dr. Berger, and Prof. Fawcett. 
Reviews of the white-fly situation for the year, with notes on new 
observations, have been included in their annual reports by each of 
the first three named, who have served successively as entomologist 
at the Florida Experiment Station. Many important papers and dis- 
cussions on the white fly have been published in the Transactions of 
the State Horticultural Society, but for the most part these have 
been incorporated or the ground covered more fully in the regular 
bulletins referred to. 
Taken as a whole, the literature on the citrus white fly is quite 
extensive, giving a fairly good idea of the status of the white fly and 
progress in methods of control from year to year since the publi- 
cation of the paper by Riley and Howard referred to in the opening 
paragraph. 
The description of the different stages and the account of the life 
history and habits of the citrus white fly by Riley and Howard have 
been followed quite closely by subsequent writers, few additional 
records having been made up to the beginning of the present investi- 
gations. Records of food plants, miscellaneous life-history records, 
general results of field experiments, and conclusions from general - 
observations on the efficiency of spraying, fumigating, and natural 
control by fungous diseases have been published by Messrs. H. J. 
Webber, H. A. Gossard, E. H. Sellards, E. W. Berger, and H. S. 
Fawcett. Comparatively little real data has been published so far in 

' Circular 18, State Crop Pest Commission of Louisiana, 1907. 
? Circular 30, California Agricultural Experiment Station, 1907. 
3 Circular 32, California Agricultural Experiment Station, 1907. 
* Proceedings of the Entomological Society of Washington, vol. 9, pp. 121-123, 1908. 





