WINTER NUMBER 39 
one mite would have a progeny of about 12 million in about 514 
months, and I believe this is just about what actually took place. 
We saw many grapefruit with an estimated number of half a 
million, and this condition was the same over the entire state. 
The “sands of the sea” or “the stars of heaven” are the only ex- 
pressions that will enable one to understand how abundant this 
species actually was the last of July and early August. 
RED SPIDERS (Tetranychus sexmaculatus MCGR.) 
No opportunity has been offered to determine the effects of the 
freeze on this pest. Few were present at the time and few have 
appeared this season. In fact, they have not been so abundant this 
season as normal. 
THE PURPLE MITE (Tetranychus citri MCGR.) 
So far as could be ascertained, the adults did not appear to 
have been hurt. The eggs, however, had a very soft and un- 
natural appearance. Since the freeze this pest has not been very 
abundant and this is, no doubt, due to the eggs being injured by 
the cold. 
ORANGE APHIDS 
The aphids infesting an orange tree before the freeze were 
dead on February 7th. No eggs were present in the colony. This 
was the same condition as was observed by Hubbard in 1895.* 
Since the freeze, however, there have been more aphids on the 
young sprouts than during any other spring in my recollection. 
These were soon killed by parasites and predaceous enemies and 
were of little economic importance. 
EFFECT OF THE FREEZE ON THE PESTS OF OTHER 
PLANTS THAN CITRUS. 
Tenuipalpus bioculatus MCGR. 
This species on privet was slightly, if any, damaged by the cold. 
Living specimens were found February 17th. These, however, 
may have been hatched since the cold. 
Tetranychus yothersit MCGR. 
This species on camphor seems to have been very seriously 
hurt. On February 7th the adults were nearly all dead. Only a 
few showed any signs of life, such as moving their legs, and only 
one on the entire lot of leaves was active. The eggs also did not 
appear to be normal, being soft and easily broken. On February 
17th put some camphor leaves, having an abundance of eggs, into 
*Hubbard in “Insect Life,’ Vol. VII, pp. 281, 282. 
