-147- 
Alaljama, F. E, Guyton (April 22)* Found in large numbers on a cherry- 
laurel tree at Auburn. Damage light, 
SAY'S STIDKBUG ( Ghlorochroa sayi Stal) 
Arizona, V, L, Wildermuth (May 23): A heavy outbreak was found in the 
upper Gila Valley, Graham County, on May 8, Attention first called 
to this bug, when they wdre observed in a migratory flight coming 
from the rapidly drying range of the foothills of the Grakam Mountains 
into the developing grainfields of the irrigated valley. Several fields 
examined, and populations found extremely heavy. One 20-acre wheat- 
field contained from 4 to 6 bugs on every head, or many hundred per 
square yard. It is estimated that damage to wheat and barley crops 
will be 'heavy. Area visited the following week, and it is reported 
that sweeping counts in the most heavily infested field showed an 
average of 59 bugs per net stroke. The largest number taken in a 
single stroke was 225 * and 19 bugs were found on 1 wheat head. 
Migration began about May 1, and the bugs had apparent'ly developed on 
filaree in the ’ surrounding range area. Present infested area extends 
from Fort Thomas on the west to Solomonsville on the east, a distance 
of approximately 30 miles# Native ranchers report that a similar out- 
break occurred 25 years ago. The present one is the heaviest and most 
widespread infestation of pentatomids ever recorded by anyone of the 
Teiirpe laboratory. Counts showed only l-g-percent parasltization. These 
bugs constitute a serious threat to the alfalfa-seed and cotton crops 
, in this valley, if normal development' continues, 
Utah, G. F. Knowlton (May 17): Collected on weed hosts in a number of 
localities in northern Utah, 
CEREAL AND F0RAG;E-CR0P INSECTS 
■ WHEAT AND OTHER SMALL GRAINS 
CHINCH BUG ( Blissus leucopterus Say) 
Illinois, W, P, Flint (May 21): Flight from hibernating quarters to small 
grain has occurred. Since this flight the weather has been mostly very 
cool, with considerable rain, although not many bugs have ‘been killed. 
Sufficient numbers remain to cause moderate to hea'Ty infestations in 
some places, provided it is dry late in May and early in June, More 
abundant in oats than in wheat. Eggs being laid but no yo\ing bugs 
found, 
Iowa, C. J, Drake (May 2l): Winter mortality was highest in the northern 
parts of the infested areas and very low in the more heavily infested 
southern part of the State, A survey in March and during the first 
few days of April showed an average mortality of from 20 to 25 percent 
in southern Iowa and about twice as high in the extreme north, Migrar- 
tion from winter quarters to small grain interrupted a number of times 
by cool weather. At present migration is not complete, and considerable 
numbers have been flying on warm days during the last week, most of the 
. * 
STATE PLANT BOARD 
