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~ FLORIDA ENTOMOLOGIST 
Official Organ of The Florida Entomological Society, Gainesville, 
Florida. 
eR SAVATSON® ce be Se ee _........Uditor 
AVVAGETIMIOIN NUE WiLL <. 228 o-oo oe ee ees ee Associate Editor 
ACE ET oe DY Bs Rots ate ee Oe ca ee Sp co Business Manager 
Issued once every three months. Free to all members of the 
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vance; 35 cents per copy. 
A NEW APHID ON CITRUS 
For the past year or more growers in certain sections have 
been having trouble with an unusually heavy infestation of aphids 
on citrus. Until recently it was assumed that this was our old 
acquaintance, Aphis gossypu, but during March and April of 
this year the trouble increased to serious proportions and efforts 
were made to determine the best method of control. 
In line with this attempt Mr. Beyer, of the Department of En- 
tomology of the Experiment Station, spent a week in Polk 
County, studying the insect and the best method of control. He 
at once recognized that the insect was not Aphis gossypii, but 
was unable to place it. He sent specimens to Washington, as did 
also Mr. Yothers, of the U. S. Bureau of Entomology, and there 
it was provisionally determined by Mr. Mason as Aphis citricola, 
a European species, but further study convinces him that it is 
not that species. It seems to be a new species. 
This new turn of affairs has naturally caused much concern 
among the growers. Indeed the behavior of the insect,—its 
rapid spread and the extremely heavy infestation,—is typical 
of a recently introduced species. 
The editor and Dr. E. W. Berger, of the Plant Board, and 
Dean Newell inspected many groves in all sections of the infested 
area. The extent of the infestation and damage is certainly ser- 
ious. With the exception of the very first flush of growth in 
the early spring, in many groves all new growth has been com- 
pletely prevented from expanding, and a large proportion of 
fruit, particularly that from the later blooms is on the ground, 
and practically all the remainder extremely rough and deformed. 
However, those inclined to regard the situation with pessimism 
should be reminded that the common predators of other aphids 
were observed working on this species in abundance. Three 
