Part VII] Beeson : Life History of Toon Borer. 
41 
Table 16 — contd. 
Individual 
Serial 
Number. 
Date 
of 
Pupation. 
Date 
of 
Emergence. 
Individual 
Serial 
Number. 
Date 
of 
Pupation. 
Date 
of 
Emergence 
May— 
May— 
May— 
May— 
20 
14th 
27th. 
21 
16th 
28th. 
45 
13th 
25th. 
22 
14th 
27th. 
46 
13 th 
26th. 
23 
16th 
28th. 
47 
19th 
31st. 
24 
14th 
29th. 
48 
15th 
29th. 
25 
14th 
27th. 
49 
15th 
28th. 
26 
14th 
29th. 
50 
19th 
1st June. 
27 
16th 
28th. 
The data given above show that the shortest pupal period is of 11 
days and the longest of 15 days ; the average of 50 observations is 13 
days but the mode is 12 days (see Table 17). 
Table 17.— Variation and Frequency of the Pupal Period of the Second 
Generation , 1915. 
Length of Pupal Period in days. 
Number of times occurring. 
11 
3 
12 
29 
13 
13 
14 
6 
15 
3 
Moths of the Second Generation. 
1914. Moths of the second generation were bred out in May and 
June 1914 from larvae feeding on fruits collected in the middle of May 
(see Table 18 below). 
Table 18. — Emergence of Moths of the Second Generation 1914. 
Date of:Emergence. 
Number of 
Moths. 
Date of Emergence. 
Number of 
Moths. 
May— 
19th 
1 
June— 
3rd 
11 
26th 
6 
5th 
16 
27th 
1 
6th 
1 
28th 
21 
8th . . 
1 
29th 
26 
18th 
1 
June— 
1st 
10 
19th 
1 
'2nd 
11 
Out of a total of 107 moths, the majority emerged between the 28th 
May and 5th June ; the period of emergence extended from the 19th 
May to the 19th June, but as subsequent records show this does not 
represent the maximum extent of the normal emergence period for 
this generation. 
[ 186 ] 
