-295- 
percent M, mexicanus but such, areas arc small. M. bivittatus appears to bo 
dominant in alfalfa fields. Aulocara elliotti Thos. end A. turnbullii are 
plentiful in pastures. Considerable crop damage has developed within the 
last 10 days, Heavy damage to wheat and barley was reported in ihe south- 
western counties of the State, averaging 20-percent damage to .barley and 
6-percent to wheat. As high as 50-percent damage reported in a few fields. 
Grasshoppers; are moving into corn in areas where most of the whec-vt he„s beer 
cut. Corn in isolated areas, especially in river valleys, is being damaged 
severely. Marginal damage of 100 percent has occurred in some fields of 
high acreage and somo smaller fields havo been completely destroyed. M. 
differentialis and M, bivittatu s are causing most damage to corn. General 
flights of M. mexicanus were reported to have occurred in a northeasterly 
direction over northwestern Kansas on July 8, 9t and 10. (July 14-20): 
From 5- to 10-percent damage to wheat and from 15- to 20-percent damage to 
barley is reported in Stanton and Morton Counties. 
Nebraska. (July l4~20 ; )i Heavy flight moving southwostward reported on July 12 
in Howard County, southeastern Nebraska. M. differentialis can now be 
found generally throughout central Nebraska, and may soon become the dominar 
species in this area. Adults of economic importance continue to remain 
along roadsides, fence rows, and idle lands. Some migration into corn- 
fields is occurring and marginal damage in a few areas, is reported as 
severe. Populations arc increasing and adu.lt spread is progressing rapidly 
in the southwestern part of the State. High marginal concentrations of A. 
turnbullii are still present in certain areas. Ninety-five percent of A. 
turnbullii , 98 percent of M. mexicanus , 100 percent of M. confusus Scudd., 
95 percent of M. bivittatus , and 50 percent of M. differentialis are in the 
adult stage. Fungus reported- causing hopper mortality of loss than 3 per- 
cent in a tableland area lo.cated between the North and South Platte Hivers, 
northwest of Ogallala, in Keith County. 
Missouri. (July 7-13 )• M. differentialis is the dominant species throughout 
the southeastern counties of Scott, Stoddard, Pemiscot, Dunklin, and New 
Madrid. M. mexicanus reported ovipositing. 
L. Haseman (July 23): Conditions normal except for a few south-central 
and southeastern counties where second-brood M. mexicanus have been attract 
ing some attention. The two-striped species is' most common in the central 
part of the State and was mating and preparing to oviposit on July 22. 
Iowa. (July 14-20): M. bivittatus are all adult throughout the Ste.te and 75 
percent of the M. differentialis are in the last two instars. M. mexicanus 
all adult and oviposition is in progress. Fungus reported throughout the 
State and in some areas has reduced hopper populations about 30 percent. 
Bcefly larvae are also reported as infesting hoppers. 
Wyoming, (July 14-20): Approximately 75~percent adult in the irrigated area 
in Park, Sheridan, Big Horn, Washakie, and Fremont Counties, with oviposi- 
tion beginning. M. femur-rub rum Deg. is still hatching and the percentage 
is high, particularly in Park end Big Horn Counties. High percentage of 
• . adults present in Goshen end Laramie Counties and oviposition is progressin 
repaidly,. 
