- 535 - 
OERBAL AND EORAGE-CROP INSECTS 
WHEAT AED OTHER SivLUiL GRAINS 
hessian ELY ( Phvtophap-^a destructor Say) 
Ohio. T. H. Parks (October 24): No serious infestation present, even in north- 
western Ohio, "There in one county the insect fed upon 32 percent 
straws of the 1937 crop. The situation has hecn relieved, apparently through 
general observance of safe-sowing d,ates, aided to sone extent by tinely 
which prevented seeding in that area during the week preceding the recommended 
dates. 
Indiana.- C. Benton (October 3l): In the. locality of La Payette emergence was 
rather straggling between September 15 and October 10. Most of the emergence 
occurred the last week in September. T7heat sown prior to the r,afe date 
(September 28 for this locality) and up to October 1 shov/s moderate to severe 
infestation; wheat sown since the safe date shows light to no infestation. 
Wheat sown the middle of September showed many full-grown larvae by October 
10 and some puparia by October 22. The unusually long, favorable weather has 
permitted many of the severely infested early sown fields to tiller out in an 
Effort to overcome the infestation. In a stubble field near Delphi, 20 miles 
northeast of La Payette, loss than half of the flies^ emerged from the stubble, 
owing to lack of rain in this locality. A rain on October 11 caused a light 
emergence in late October, thus bringing about a light infestation of late- 
sown wheat. 
Missouri. L. Haseman (October 25) t. A fall check-up on wheat stubble in the north- 
eastern counties of the State, which were not covered in the earlier”Pederal 
report, showed that most of the areas from which stubble was examined had no 
flaxseeds, while stubble from other fields showed very, light infestation, 
averaging 2.2 percent. 
Correct ion.- - Data on hessian fly survey for Missouri and nap illustrating 
same were represented incorrectly in the Insect Pest Survey Bulletin issued 
on September 20 (vol.-18, sui)plemont to no. J* P* 51^) • On the map, infesta- 
tion in the northwestern po.rt of the State should be 2 percent, in the south- 
western part 8 percent, in the southeastorn part 1 percent, and in .the east- 
central part 3 percent. The Hessian fly infestation, Juno 1933 figures given 
in the surmary were for Oklahoma, instead of for Missouri. Correct summary 
follows. 
Area 
Pields : 
Sampled ; 
Stems infested 
Average. : Maximum ; 
Minimum 
Number : 
Percent 
Percent ! 
Percent 
Missouri; 
» 
• 
k 
Northwestern ^ 
20 : 
2 
10 : 
0 
West-central — 
33 
2 
22 : 
0 
East-central 
43 : 
3 
18 
0 
Southwestern 
35 : 
8. 
68 : 
0 
Southeastern — — - - -! 
^ , ? 
1 
4 • 
0 
