-82- 
only 5-6 percent were living on grapefruit foliage. This agrees with 
similar observations made following the freeze of l c 17> '"hen 6 "oer- 
cent survived on camphor foli^"e. 
PURPLE SCALE ( Leoidosaphes beckii Newm. ) 
Florida. W. W. Yothers and M, ~. Osburn (March): Tae uurole scale appeared 
to be more resistant than the red scale, the survival of adult females 
being about ]2 -percent in the same situations where the observations 
on red scale were made. Generally, all im- • ture stages of both species 
of scale v/ere frozen. 
CALIFORNIA RED SCALE ( Chrysompha lus aurantii Mask.) 
Arizona. C. D. Lebert (January to Aoril 23): Thirty-seven small infes- 
tations found in the Phoenix area have apparently been eradicated. 
COTTONY-CUSHION SCALE ( Icerya purchasi Mask- ) 
Arizona. C. D. Lebert (Aoril): The cottony-cushin scale is occurring or. 
several citrus plantings in the Phoenix area. Numerous complaints have 
been received. The seriousness of this pest is entirely offset by 
the timely appearance of many of the Australian ladybird beetles 
( Rodolia cardinal is Muls.). These predators are apparently living up 
to their reputations as outstanding exam-les of biological control. 
GREEN CITRUS APHID (Aphis sPiraecola Patch) 
Florida. J. R. Watson (April 2"^): The citrus aphid has increased very 
rapidly and is now very abundant on young growth of citrus. In most 
cases this is too late to do serious damage to trees or the coming 
crop. 
Mississippi. C. Lyle and assistants (April 2): This aphid is very -bundant 
on soirea at Coldwater. 
CITRUS RUST MITE ( Fnyllocoot es oleivor-js Ashm. ) 
Florida. W. W. Yothers and M. R. Osburn (March): Observations following 
the freeze of December 12 and 13 , when the temperature dropped to 22" ". 
show that the low temperatures apparently did not reduce greatly the 
number of rust mites. 
AVOCADO 
CITRUS ROOT WEEVIL ( Pachnaeus litus Germ.) 
Florida. J. W. Watson (April 23): Avocado bloom in the vicinity of Miami 
was attacked by the citrus root weevil and also by Anomala so. 
