-109- 
Winter Mortality 
Samples taken periodically from locations near Lafayette gave the 
following results: 
January 7 : February 1: February 20: March 11 .'April ^-12 
Hibernating media 
Total: Dead 
bugs: bugs 
Total: Dead: Total: Dead 
bugs: bugs: bugs: bugs 
Total: Dead: Total: Dead 
bugs: bugs: bugs : bugs_ 
Eunch grasses 
Timothy 
No. : i : No._ 
913 : k :22S 
U71 : trace: 25 
% 
: No.: i 
: No. : i 
No. 
i 
10 
: 1,73^: 13 
:1,39H: 16 
9?6 : 
19 
g 
: 12Q: -21 
: 12: 17 
17U : 
37 
Winter mortality obviously has not greatly reduced the prospect of 
severe infestations in 1935 i n the area covered by this survey. Even with 20 
percent reduction in numbers of hibernating bugs, a winter survival of over 
200 bugs ner square foot of bunch grass would still be indicated for Tippecanoe 
County. The cause of mortality is not evident. Comparatively few of the dead 
bugs show macroscopic indications of disease. 
