10 
BULLETIN 964, U. S. DEPARTMENT OF AGRICULTURE. 
Tables I, II, and III were prepared after a close examination of 
the most seriously infested host plants collected from the fields in 
which outbreaks occured, and show that alfalfa is most frequented 
by Halticus citri for egg laying. 
Table I. — Infestation in alfalfa by Halticus citri, shotting the number of eggs in each 
leaf and where deposited. 
Leaf No. 
Eggs j Eggs Total 
deposited deposited number 
in upper J in lower ; of eggs 
surface. ' surface, deposited. 
Eggs 
Eggs 
Total 
1 
2 
3 
4 
5 
6 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 

1 
1 
29 

4 
10 
15 



1 

j 
1 
11 

2 
4 
14 
2 
4 

1 
1 
7 
1 
9 

1 
Leaf No. 
Total.. 
deposited 
deposited 
number 
in upper 
in lower 
of eggs 
surface . 
surface. 
deposited. 
3 

3 
2 

2 
3 

3 
16 
9 
18 
30 

30 
53 

53 
10 
7 
17 
31 

31 
6 

6 
23 

23 
15 
1 
16 
23 
15 
38 
2 

9 
3 

3 



2 
1 
3 
2 

9 
3 

3 



3 

3 
7 
1 
S 
1 
1 
9 
20 
1 
21 
9 

9 
428 
65 
493 
Table II. — Infestation in clover by Halticus citri, showing the number of eggs in leaf and 
where deposited. 
Leaf No. 
Eggs 
deposited 
in upper 
surface . 
Eggs 
deposited 
in lower 
surface. 
Total 
number 
of eggs 
deposited. 
Leaf No. 
Eggs Eggs 
deposited deposited 
in upper { in lower 
surface, surface. 
Total 
number 
of eggs 
deposited. 
1 
2 
3 
4 

3 
11 
9 
14 
2 

10 
1 
4 

1 
3 
5 
S 

4 
1 
6 

1 
10 
11 


1 
3 
1 

2 


o 
o 


1 


2 
i 


I 


3 
1 
2 

4 
10 
12 
9 
16 
2 

10 
1 
4 

2 
3 
5 
10 
1 
2 
4 
1 
8 

1 
13 
12 
27 
28 

1 
8 6 
5 1 
14 
9 3 
2 4 
13 2 
1 
3 
1 
6 
4 
2 4 
1 
10 1 

1 
5 
2 
7 1 
4 
9 2 
3 

1 
14 
6 
14 
12 
6 
15 
1 
3 
1 
6 
4 
6 
1 
11 

1 
5 
9 
I 
11 
3 
29 
30 
31 ' 
?::::::::::: 
32 
33 
8 
9 
31 
35 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
33 ... . 
37 
33 
39 
40 
41 
42 
43 
44 
45 
46 
47 
22 .... 
4S 
23 
49 
24 
50 
25 
Total... 
26 
222 45 
267 
