A total of 7,751 beetles were taken. Of these P. rugosa comprised 
74.58 percent, P. fusca IS. 38 percent, P. balia 2.59 percent, and P. ilicis 
2,44 percent. Together these species supplied 97 • 99 percent of the total. 
The number of beetles of each species taken and the proportion of the total 
each species represents are shown in the "total 0 line at the bottom of 
table 3 . It may be noted that P. hirticula was scarce in this area, as was 
P. rugosa in Lafayette and Iowa Counties. - 
Host Preferences of the Beetles outside the Gays Mills. .Area 
Table 2 gives a complete list of the kinds of host plants from which 
collections were made in the southern part of the State, excluding the 
Gays Mills area, and the numbers of beetles of each species taken from each 
kind of plant. These tables are identical in form with those which appeared 
previously in Supplement to Number 4, Volume 18, of the Insect Pest Survey 
Bulletin. There are 3 entries in each space consisting of 2 percentages 
and a number. The percentage at the top represents the proportion of the 
species of beetles appearing at the top of the column, which were taken 
from the host plant at the left, and the lower percentage represents the 
proportion of the total beetles collected from the host ' mentioned at the 
left, representing the species at the top of the column. The middle number 
in each group of figures represents the number of beetles of the species 
mentioned at the head of the column, collected from the host plant mentioned 
at the left. Thus 3*520 P. hirticula were taken from hazel. These repre- 
sented 53-27 percent of the total beetles of this species and 76. 71 percent 
of the total beetles of all species taken from hazel. 
P. hirticula was taken from 27 kinds of plants. Hazel, bur oak, 
hickory, and aspen supplied 53*27* 21.87, 4. 96 , and 4.71 percent of the 
total number of beetles and together 84.81 percent of the total for this 
species. 
P. rugosa was collected from 31 kinds of plants. Aspen, red oak 
(group), hazel, hickory, willow, dogwood, and bur oak supplied 17 * 22 , 
lS.97» 11.44, 10 . 26 , 8.04, and 7*^9 percent of the total number of beetles, 
respectively, and together 80. 03 percent of the total for this species. , It 
is apparent that P. rugosa is more diversified in its feeding habits than 
is P. hirticula. 
P. fusca v/as taken from 26 kinds of plants. Dogwood, rod oak (group), 
bur oak, aspen, and hazel supplied 35*15* 19*47* 3.0.12, 8.57* and 8.07 per- 
cent of the total, respectively, and together 81. 38 percent of the total for 
this species. 
P. prunina was taken from 13 kinds of plants. Of these oaks of the 
red oak group and hazel supplied 81,03 and L0.84 percent, respectively. Pre- 
ferred hosts of the other species of beetles may bo found in table 2. 
Host Preferences of the Beetles in the Gays Mills Area 
Host preferences of the various spocies of beetles in the Gays Mills 
area are shown in table 3* which is identical in form with table 2. The 
most abundant species, P. rugosa , 'was fo'und "on 29 kinds of plants, cultivated 
