Instar

Age (days)

Number of aphids consumed

V1

V2

V3

V4

Mean ± SD

First

Mean

1
2

2
4
3 ± 1.41

3
4
3.5 ± 0.71

3
5
4 ± 1.41

2
5
3.5 ± 2.21

2.50 ± 0.58
4.50 ± 0.57
3.50 ± 0.41

Second

 

 Mean

3
4
5
6

8
10
11
15
11 ± 2.94

8
11
12
15
11.50 ± 2.89

7
11
14
16
12 ± 3.92

7
12
14
17
12.50 ± 4.20

7.50 ± 0.57
11.00 ± 0.82
12.75 ± 1.5
15.75 ± 0.96
11.75 ± 0.65

Third

 

Mean

7
8
9
10
11

16
17
22
22
24
20.20 ± 3.49

18
20
23
21
23
21 ± 2.12

17
21
19
23
24
20.80 ± 2.86

18
19
22
24
25
21.60 ± 3.04

17.75 ± 0.96
19.25 ± 1.70
21.50 ± 1,73
22.50 ± 1.29
24.00 ± 0.82
20.90 ± 0.58

Fourth

 

 

Mean

12
13
14
15
16
17

26
30
39
46
52
55
41.33 ± 11.76

28
32
37
40
46
51
39 ± 8.58

27
34
38
39
49
54
40.16 ± 9.87

25
30
36
45
50
50
39.33 ±10.61

26.50 ± 1.29
31.50 ± 1.91
37.50 ± 1.29
42.50 ± 3.51
49.25 ± 2.5
52.50 ± 2.38
39.96 ± 1.04

Table 1: Comparative feeding of different larval instars of Adalia tetraspilota (H.) on green peach aphid under laboratory condition.