62 THE FLORIDA ENTOMOLOGIST 
Mr. Geo. D. Smith, a specialist in boll weevil control, has re- 
signed from the Bureau of Entomology to accept the position 
of Associate Entomologist of the Plant Board. He will have 
has headquarters at Madison. 
Our president, Mr. Frank Stirling, left for Raiford on March 
1st. The length of his stay is “indeterminate.” 
Prof. L. C. Corbett of the Bureau of Plant Industry, with 
headquarters at Washington, recently accompanied Director 
Newell on a visit to the Citrus Sub-station at Lake Alfred. 
“Red Spider on the Avocado” is the title of Bulletin 1035 of 
the U. S. D. A. (Professional Paper) by Mr. G. F. Mosnette. 
This well illustrated and valuable bulletin should be in the hands 
of every member interested in the avocado industry. 
LIFE HISTORY STUDIES OF SOME FLORIDA APHIDS 
(Continued from Page 59) 
live here throughout most of the summer, or until the vines dried 
up, being collected on watermelons as late as July 23. After that, 
nothing was seen of them until October when they again ap- 
peared on orange trees. The latter part of November there oc- 
curred a freeze which killed the orange leaves while many of the 
aphids were present on some trees. The lice were not hurt by the 
freeze but continued to live for two days afterward or until the 
leaves wilted and dried up, when they died for lack of food. In 
January they again appeared in the greenhouse and continued to 
live there in increasing numbers throughout the rest of the win- 
ter, or until the first part of April. An interesting feature about 
them is that they will not live in the greenhouse in the fall. When 
first found in October, several attempts were made to colonize 
them on the orange trees in the greenhouse, but without success. 
This, in general, seems to be the life history of this louse in 
Florida. They will live on melons and other fresh plants during 
the spring and summer and then migrate to the orange trees in 
the fall. The season of late summer and early fall, after the 
melon vines have disappeared, is probably spent on some of the 
numerous wild plants on which they have been reported. It is 
possible that they lay winter eggs on the orange trees to pass a 
part of the winter, at least in the northern part of the state or 
when the winter is especially cold. This may account for the 
fact that they were not found outside on the oranges except 
during part of the winter. However, no sexual forms or eggs 
were ever seen and it is the writer’s belief that they did not 
