-33- 
The results of the survey in Delta County, sampled September 8-18, are as 
follows: 
H. postica 
adults 
B.. curculionis cocoons 
Field No. : 
Present 
Viable 
1 - 
3 - -' - ; - - 
4 - - -..-■- 
5 - - ; - --- 
g _ _. 
10 - - - - - 
Number 
1.25 
1.50 
.75 
1.25 
1.25 
1.25 
.75 
: 1.25 : 
1.50 
1.75 
Number 
4.00 
8.50 
13.00 
7.00 
! 3. 25 
f. 9.00 
: 2.75 
4.75 
1.00 
:' 1.25 
Percent 
13.75 
5.88 
21.15 
53.57 
30.77 

13.18 
26.32 
! 75.00 

Average - - 
1..25 
5.45 
20.64 
Mont rose County .-- Adult populations indicated slight damage in 1937. 
Only two fields actually had 'menacing adult populations, but in several others 
the number closely approximated that constituting a menace. The results of 
the survey in Montrose County, sampled from September 23 to October 8, are 
tabulated below. 
: H. Postica 
: adults 
33. curculionis cocoons 
Pi eld No. 
Present 
Viable 
1 
2 
3 
4 „ _ 
5 
6 
10 
11 
12 - - - - - 
13 
14 
15 
: Number 
: 1.25 
s 1.25 
r 1.00 
: 4.25 
: .50 
l 1.50 
: 2.00 
l 1.50 
1 . 00 
E .75 
: 1.00 
: 1.00 
! 1.25 
: .50 
1.00 
Number ! 
: 2.00 
I 2.25 
13.50 
2.25 
.75 
: 6.75 
8.25 
15.00 
12.25 
5.75 
3.00 
3.25 
4.75 
11.00 
: 3.50 
Percent 
12.50 
! 11.11 
11.11 
44.44 
66.67 
18.52 
21.21 
25.00 
4.08 
! . 13.04 
75.00 
7.69 
10.53 
27.27 
! 21.43 
Average - - 
: 1.32 
: 6.28 
19.36 
Mesa County . — Adult populations indicated widespread damage in 1937, 
menacing populations being present in about three-fourths of the fields. Only 
1.5 adults per square foot are necessary to produce damage in this area, owing 
to poor stands and growth, last season's studies in western Colorado indica- 
ted that the parasite, although rather numerous, was less abundant and less 
effective than in Utah. Parasitization of early larvae was less and the 
