FLORIDA STATE HORTICULTURAL SOCIETY. 
81 
ent times at which operations were be¬ 
gun in the same grove or yard, we have 
in all something like forty or fifty exper¬ 
iments made by the writer for introduc¬ 
ing the fungi parasites of the white fly 
during the past two years. 
TWO OTHER FUNGUS PARASITES. 
Since appearing before you a year ago, 
two other fungus parasites of the white- 
fly larvae have been discovered in Flor¬ 
ida. These are described by Professor 
H. S. Fawcett in Press Bulletins 68 and 
76, Florida Agricultural Experiment 
Station, and are the whitefringe fungus 
(Microcera sp.) and the cinnamon fun¬ 
gus ( Verticillium . heterocladum) re¬ 
spectively. The whitefringe fungus has 
been observed mainly at Sutherland, but 
specimens have been sent in from other 
parts of the State; so that it appears to 
be quite widely distributed. The cinna¬ 
mon fungus has hitherto been mistaken 
for the brown fungus, and is probably 
as widely distributed as the latter, though 
not so abundantly. Both of these fungi 
being new discoveries, we are not pre¬ 
pared to make specific recommendations 
as to their efficiency in reducing the 
whitefly or as to the best methods for in¬ 
troducing them. Professor Fawcett, who 
has so far done about all of the work on 
the whitefringe and cinnamon fungi, suc¬ 
ceeded in starting both of these upon 
whitefly larvae by spraying the spores of 
the fungi suspended in water. The cin¬ 
namon fungus has also been started by 
pinning leaves, and this method, no 
doubt is applicable to the whitefringe 
fungus. 
SIX KNOWN' FUNGI PARASITES. 
Following is a list of the six known 
fungus parasites of whitefly larvae given 
in their order of discovery in Florida: 
Red Aschersonia ( Aschersonia aleyro- 
dis Webber) 1893. 
Brown Fungus (spores unknown) 
1896. 
Red-headed Scale Fungus ( Sphacros - 
tilbe coccophila Tul.) 1903 [ ?] 
Y e 11 o w Aschersonia ( Aschersonia 
davo-citrina P. Henn.) 1906. 
Whitefringe Fungus ( Microcera sp.) 
1907. 
Cinnamon Fungus (Verticillium hete¬ 
rocladum Pensig) 1907. 
The red-headed scale fungus has been 
observed upon white fly larvae only a few 
times and cannot be said to be of much 
significance in its relation to this insect. 
It is, however, a most efficient fungus 
parasite of scale insects in nearly every 
part of the State. 
The following table gives the present 
distribution in Florida of the six fungus 
parasites of white fly larvae: R, Red 
Aschersonia; Y, Yellow Aschersonia; B, 
Brown Fungus; W, Whitefringe Fun¬ 
gus; C, Cinnamon Fungus; S, Red¬ 
headed Scale Fungus: 
6 
