-38- 
Table U. — Survey results, Jefferson. Madison, and Fremont Counties. 
Idaho, sampled September lU-15. 1937 
Field No, 
postica 
adults 
B. curculionis cocoons 
Present 
Viable 
1 . 
2 - 
3 _ . 
k . 
5 _ _ . 
6 — . 
7 . 
g . 
9 . 
10 . 
11 . 
12 
Average - 
Number 
.50 
3.25 
3.25 
•I.25 
1.25 
-75 
1.00 
•75 
5.50 
1.25 
2.-75 
1.25 
Number 
9.00 
30.00 
9.25 
U.50 
6.5O 
17.25 
lU.75 
1^.75 
5.7-5 
10.75. 
1U.-25"" 
2.25 
Number 
1-75 
3. .50 
1.75 
.50 
.50 
■ 5-75 ■ 
•75 
•75 
.50 
•75 
1.00 
1.00 
1.90 
11.67 
1.5U 
The survey of western Idaho was limited in 1937 to Canyon County, 
it being considered typical of the important alfalfa-growing area of 
western Idaho and eastern Oregon. 
In Cahvon Coimty (table 5) only slight weevil damage is expected 
in 193^' Of* 25 fields, 2 : were populated by threatening numbers of 
weevils. No : adult weevils were found in about half the fields examined. 
Parasite cocoons ?/ere scarce but' were commensurate with the small weevil 
populations. 
