THE RED SPIDER ON THE AVOCADO. 
(Fig. 5.) During the summer in Florida drenching and frequent 
rains usually prevent the red spiders from establishing themselves 
on the trees. During late fall and winter and early spring it rains 
seldom, and the interference with the activities of the red spider is 
slight. 
PREDATORY ENEMIES. 
A number of predatory enemies of the avocado red spider aid at 
various times in keeping down the species on the avocado to a small 
degree. 
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Fig. 5. — Precipitation chart for the years 1918 and 1919 in southern Florida. 
Scolothrbps sexmaculatus Pergande is one of the predatory thrips 
and is not abundant during the height of the red-spider season. 
Nevertheless it is present doing its share of destruction. It is a light- 
colored thrips possessing six dark spots on its body. It feeds on the 
red spiders in both the larva and adult stages. 
ChrysojKi lateralis Guer. is one of the so-called lace-wing flies and 
is predatory in the larva stage on the red spider. The larvae, while 
feeding and wandering about the foliage in search of their prey, 
carry with them a protection consisting of foreign material, such as 
cast red spider skins, etc. The larvae have a voracious appetite and 
