~ 70 - 
GEIEEAL FEEDER S 
GRASSHOPPERS (Acrididae) 
Arizona, B. M. Gaddis and assistants (April 6-12) : Melanoplus mexicanus 
Sauss. is the only species of major importance now present in the 
crop area of Yuma County. Hatching is about complete, with the stages 
in development. ranging from first instar to adult, Hirst adult was 
reported to have been observed in the south Gila Valley area of Yuma 
County on April 8. Populations in alfalfa fields range 'from less than 
1 to 45 per square yard, with concentrations in localized areas of 
some fields ranging into hundreds per square yard. Damage to alfalfa 
already is evident in some fields. Populations in the Gila Bend and 
Arlington districts of western Maricopa County range from less than 
1 to more than 5 per square yard, (April I3-I9): Hatching of the 
dominant species, M. mexicanus , is now almost complete in Yuma County 
and most of them are in the third and fourth instars. Nymphs have be- 
come well scattered throughout alfalfa fields. In Maricopa County 
populations per square yard are very low in most instances. 
Kansas.-^/ (April 13-19 ) : P racticallv no hatching has occurred in Kansas 
north and west of Great Bend. The peak of the hatch in this area is 
not expected to occur, even with favorable weather, prior to May J , 
The weather has been more favorable toward egg development in south- 
ern Kansas, where M. mexicanus and Aeoloplus turnbullii Thos. have 
been hatching in very light numbers in the more favored environments 
during the week. Hatch at present is less than 1 percent complete. 
Oklahoma and Texas. (April 1 3— 19 ) : ®gg development in the Panhandle 
areas of Oklahoma and Texas has been favored by weather conditions 
and M. mexicanus and A. turnbulli i were reported to be hatching in 
very light numbers in favored environments during the week; however, 
the hatch is less than 1 percent complete. Grasshopper nymphs were 
reported to be hatching along ditch banks and fence rows adjacent 
to wheat in Ochiltree and Hansford Counties, Tex. The dominant 
species observed was Aulocara elliotti Thos, M. mexicanus nymphs were 
found at only one stop in Ochiltree County. Hatching in these two 
counties is not general to date and nymphal populations are con- 
siderably less than one per square yard. First nymphs were found 
15 miles southwest of Perrvton, Ochiltree County, on April 18. 
Missouri, L, Haseman (April 25 ) • Infestation has returned to normal 
over the St»te, with the exception of a few counties in the south- 
central and southeastern part, where eggs were hatching in sheltered, 
sunny spots on April 18, according to G. D. Jones. 
Utah 
G. F, Knowltqn et al 
found m alfalfa near 
nymphs were 
in zhe southern 
part of the State. (April 19): A few second- and third-ins tar grass- 
hoppers, apparently A, elliotti and MeLanoplus sp,, were observed in 
y 
Where no name is 
uaddis and assistan 
iven after the State the 
s. 
report is by B, 
M. 
