69 - 
Table 2, Beetles taken from various host plants in Gays Mills area in 1941 
Host plant \ P. rugosa 
.. P. fusca 
P. hirticula 
P. balia 
P. 
licis 
’ Hum- 
: ber 
Per-. 
cent 
Hum- 
ber 
Per- 
cent 
Hum- 
ber 
Per- 
cent 
Hum- 
ber 
Ps lu- 
cent 
Hum-' 
ber 
Per- 
cent 
Cheriy (cult.) . 382 
26.88 
55 
7.79 
33 
17.19 
1 , 
5 
10.42 
Butternut \ 189 
13.30 
362 
51.27 
73 
38.02 
19 
15.57 
14 
29.17 
Hazel 144 
10.13 
33 
4.67 
37 
19.27 
— 
— 
13 
27.08 
Hickory ; 131 
9.22 
162 
22.95 
29 
15.10 
74 
60.66 
5 
10.42 
■RTl rn & 114 
8.02 
7.18 
. . 
t 
. t 

— — — i 
Crataegus spp. . . . . 102 
— — 
— 
— 
— 
7 
5.74 
4 
8.33 
Populus grandi- : 
dentata \ 60 
4.22 
- , . 
r T . 
. , „ , 
„ 
Populus tremu- \ 
loides (aspen) . .; 58 
4.08 
, t , 
. 
_ 
Basswood \ 47 
3.31 
— 
— 
— 
— 
— 
— 
— 
— 
Wild 'crab (iVrus)' • 
— 
— 
■ — 
— 
■ — ■ 
6 
4,92 
— 
Total 1,227 
86.34 
612 
86.68 
172 
89.58 
106 
86.89 
41 
85,42* 
A complete list of all hosts of all species collected at Gays Mills, with 
various other data, is given in table 3, This table is similar to the com- 
plete tables in the reports previously cited. There are three entries in 
each space, which, reading from the top, consist of a percentage, a number, 
and a percentage. The top percentage represents the percentage of the 
beetles of the species named at the head of the column, taken from the host 
plant at the left, the middle figure the number of beetles of the species 
taken from the host at the left, and the percentage at the bottom of the 
space the percentage of the total beetles from the host at the left supplied 
by the species at the head d the column. Thus, 13,30 percent of the beetles 
of the species Phyllophaga rugosa were taken from butternut. The number of 
beetles of this species from butternut was 189, and the number of P, rugosa 
beetles from this host represented 28.64 percent of the total beetles of 
all species from this host. 
In areas outside of the Gays Mills district, Phyll ophaga hirticula 
was collected from 16 kinds of plants. Pour of these supplied 90.03 per- 
cent of the total beetles of this species. P. fusca was collected from 
1.7 kinds of plants, of which 7 supplied 92.78 percent of the total. 
P, rugosa , was taken from 18 kinds of plants, 86.67 percent being supplied 
by 6 kinds, P. tristis was taken from 4 kinds of plants, 98.71 percent 
being supplied .by 3 of them, P. illcis was collected from 5 kinds of 
plants, of which 2 supplied 91.83 percent of the total. P. futilis was 
found on 8 kinds. of plants, 4 of which supplied 87.51 percent of the 
total beetles. A list of the principal hosts of these more important 
species is given in table 4. 
