REPORT OF THE STATE ENTOMOLOGIST 1918 23 
Through the kindly cooperation of George W. Mead of Barker and 
E. E. Crosby of Lockport, temperature records were kept through 
most of June and July. The two localities were selected for the 
purpose of ascertaining what differences might exist between the 
Barker orchard located about 2 miles from Lake Ontario and at an 
elevation 200 feet high, and the Lockport orchard some 14 miles 
from the lake and with an elevation of approximately 600 feet, this 
latter being on the Erie plain. The cool breezes of midsummer are 
very evident near the lake and less apparent in the vicinity of Lock- 
port. The temperature records were made at 8 and 9 p. m. (daylight 
saving time) or 7 and 8 p. m., sun time. The latter record is the 
most significant so far as codling moth activities are concerned. It 
will be noted on referring to these records that the thermometer at 
9 p. m. did not reach 60 degrees F. or higher until the 24th, rising 
the last of the month to 70 degrees. It is interesting to note in this 
connection that field observations resulted in finding eggs in orchards 
June 27th for the first time and a markedly greater abundance of 
eggs July 1st, the latter almost exactly coinciding with the decidedly 
higher evening temperatures. Again there was an increased ovi- 
position July 12th which, on referring to the temperature records, 
will be found to follow a series of decidedly higher evening tempera- 
tures, and this was even more marked on July 16th and 18th. 
The temperature and oviposition records given below justify the 
statement that codling moths will not lay many eggs when the early 
evening temperatures, namely 8 p. m. sun time, are below 60 degrees 
and a rise to this point or above is very apt to be followed by the 
deposition of large numbers of eggs, specially in orchards badly 
infested by this pest. It is not difficult to corroborate this general 
statement by finding the tiny, glistening, semitransparent or whitish 
specklike eggs with a diameter a little less than the head of an 
average pin upon the leaves, and particularly the smooth surface 
of the fruit. The period of most active egg laying in the western 
part of the State comes in early July, very likely the first week, 
though sometimes it may be delayed until the second or even the 
besinning of the third week. 
