TABLE X X I
Some Data on Larval Density, Larval Growth, Pupal Size, and Adult Fecundity, Arranged According to Larval Density
Mean head
width last
larval instar
Mean pupal diameter (mm)
Stand. dev. Rough estimate
(mean of
Totals
Males
Females
of histogr. 4 of proportion
histogr. 5,
(parasit(non-parasit- (non-parasit- Mean
Larval
(Fig. 19) in
of six-instar
Fig. 19) in
ized pupae
ized pupae
ized pupae
adult
Generation
density
micr. units
larvae in yo
micr. units
included)
only 1
only)
fecundity
1
2
3
4
5
6
7
8
9
-
1961-62
1951-52
1962-63
1963-64
1956-57'
1955-56
1954-55
1950-51
1960-6 1
?981 $9
1953-54
1959-60
195%59
1952-53
1957-58
26.0
23.2
19.8
18.3
13.9
12-2
11.5
8.6
7 -0
c: .n
4.5
4.1
2 -8
1 -4
1.2
U "
2 4
1.7
2.4
1.7
2.2
1 -8
-
3 .O
4 -2
3 -9
3.3
4.3
-
-
0-10
0- 10
0-10
0-10
5-20
0-10
-
20-40
J+60
80-100
20-40
56-60
-
-
45 *4
45 -8
45.1
45.5
46.1
45.8
47.1
45.8
47.1
48 *2
48.6
-
-
4.51
4-29
4.52
4.47
4.46
4.52
4-50
4.48
4.69
4.68
4.63
4.77
4.62
4.68
-
4.33
4.11
4-29
4.27
4.27
4.30
4.30
4.31
4.38
4.45
4.39
4.49
4.37
4.40
-
4-82
4.59
4.80
4-83
4.69
4.77
4-83
4-91
5.01
5.01
4.94
5.22
5 -03
5.13
-
168
136
18!.
161
166
172
19.5
-
-
20.5
192
210
178
216
a. larval density expressed as mean number per ma over the period 28 July - 10 September. The data presented here deviate slightly from those given by Klomp (1958).
b. 1 micrometer unit = 0.045 mm.
due to the fact that the mean has been computed over a longer sampling period.