INSECT PEST SURVEY BULLETIN 
Vol- 2 
October 1, 1922 
No. 7 
CEREAL AND FORAGE-CROP INSECTS 
WHEAT 
HESSIAN FLY f Phvtophaga destr uctor Say) 
Pennsylvania P. R. Myers (September 20) . "In the Southeastern Pennsylvania 
area there has been a general decrease from 1~'"6 per cent at 
Nazareth to .12.15 per cent at Wernersville, except at Perkasic 
whe-e there is recorded an increase of 4,62 pex- cent. 1*\ the 
Susquehanna Valley ar^aaall localities shewed an increase which 
varies from U.20 per cent at Montoursville to 14.91 per cent at 
Middloburg ." 
Delaware and 
Marv^eiid 
Illinois 
Iowa 
Illinois 
P. R. Myers (September 20) . "In the Delaware and Eastern Shore of 
Maryland area there has been a decrease in all localities except 
at Cambridge, where there has been an increase of 1.09 per cent 
and at Princess Anne, where there has been an increase of 18.94 
per cent." 
W. P. Flint (September 18). "There is no change in the Hessian 
fly situation since last month. A few flies are emerging but 
eggs are very scarce in the central part of the State. * 
F. A. Fenton (September 19). "Three Hessian fly observation 
stations have been established*. No. 1 at Spring Hills, in Y, r arren 
County: No. 2 at Onawa, in Monona County; and No» 3 at Essex in 
Page County. Judging from reports sent in from these stations 
infestation seeru3 uo be most severe in. the vicinity of Warrsn 
and Polk Counties. At the Wanej County stabion the fly has bden 
emerging more abundantly than, at either of the other stations and 
there is a comparatively small pereantsge of parasitism at this 
station as compered with a high percentage at the P%e and Monona 
County stations. At this tire in 1921 the majority of the wheat 
was planted in TTarren and Po.lk Counties. Owing to the campaign 
put on this year, at the present ire there are only four fields 
sown in Warren and one in Polk County.* 
JOINTWOHM ( Hamolita tritici Fitch) 
W» P. Flint (September IS) . "Parasites of the jointworm are very 
abundant. Counts show approximately 50 per cent of the larvae 
killed in this way. 3t survny conducted during August showed a 
spotted infestation ranging from 2 per cent to 46 per cent in the 
southern part of the State." 
CORN 
CHINCH BUG (Bliasus l eucor>teru3 Say) 
Indiana J. J. Davis (September 19). "Now that the wheat-sowing period is 
approaching, farmers are finding plenty of chinch bugs in cornfields 
and are inquiring as to the advisibility of sowing wheat in the 
infested fields.* 
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