THE PECAN LEAF CASE-BEAREK. 
11 
the lower limbs. When disturbed they fly rather reluctantly from 
their places of concealment, but their flight is usually so rapid that 
it is quite difficult to follow them, although the distance traveled 
may be only a few feet. When alarmed, moths hiding, in the debris 
around the base of trees often work their way into the dead leaves 
rather than take wing, and because of their protective color they are 
likely to escape detection. 
Length of life of moths. — The average length of life for 26 adults 
was found to be 4.8 days, the maximum 10, and the minimum 2. 
Data bearing on the length of life are insufficieDt to give any generali- 
zation. 
Oviposition and the length of egg stage. — It was very difficult to get 
reared specimens of moths to oviposit in confinement, but moths col- 
lected in pecan orchards laid eggs rather freely in some instances in 
rearing cages, upon both surfaces of the leaves. Under natural con- 
ditions moths oviposit only upon the underside of the ieanets. The 
greatest number of eggs recorded as having been deposited by a 
single individual was 182, which were laid by a moth collected in the 
field on July 20, 1916. The eggs were deposited as follows: 157 on 
July 21, 22 on July 22, and 3 on July 23. The records show that a 
period of from three to five days elapsed between the time of emer- 
gence of moths and the time of oviposition. Tables IV and V show 
the length of the egg stage . 
Table IV. — Length of egg stage of the pecan leaf case-bearer at Monticello, Fla. 
Date moths 
were placed in 
cage. 
Date of ovi- 
position. 
Date of hatch- 
ing. 
Length 
of egg 
stage. 
June 15,1913 
Do 
Do 
Do 
June 30,1914 
July 13,1914 
June 17,1913 
June 18,1913 
June 19,1913 
June 20,1913 
July 2, 1914 
July 16,1914 
June 24,1913 
June 25,1913 
do 
June 26,1913 
July 7,1914 
July 24,1914 
Days. 
7 
7 
6 
6 
7 
8 
8 
Minimum 
6 
As shown in Table IV, the length of the egg stage was from 6 to 8 
days. The moths used in obtaining these records were collected in 
the field, and from data on hand it is impossible to compute the 
average length of the egg stage. Upon emerging from the eggshell the 
larva feeds upon the leaf surface at the place where the egg is 
deposited. 
