• HE3RASIIA 
This is the third adult collection nadc in ITebrasha during the regu- 
lar adult survey, The other two were nadc in 1935 and 1337, respectively, 
ho collection was made in 133G. There were 12,965 specimens collected in 6 
environments and miscellaneous crops not treated separately, with about 56 
species represented. Immature forms comprised about 16 percent of the total 
specimens collected, li e la.n o pi us mexicanus was easily the dominant' grasshopper 
in all environments, with I.i. differential! s and h. bivi't tabus, of equal numbers, 
second in importance. This held true in alfalfa, small grain, and idle land. 
In corn LI. differential! s was about equal with M. mexi canus in numbers collected. 
—• h ivit tabus was third in corn. In 1937 the genus Co rAillacris was the most 
numerous on range and idle land, ranking second to m exican us in the number 
collected. It formed 6 percent of the total number of specimens collected, 
while m. mexi canus formed 12 percent. In the 1938 collections Cordillac ri s 
formed only half of 1 percent of the total specimens collected and did not 
come in the first 5 important species classification in any of the environ- 
ments. A similar sharp reduction of this genus took place in montane between 
1935 and IS5G. In 1935 C. cr emulate was the most abundant species on the 
range, forming 15 percent of all specimens collected in this environment , 
In 1936 it dropped to eighth place forming only 3 percent of those collected. 
There was definite increase in the relative numbers of m. bl vi ttatus and LI. 
dif fercntlali s over the 1937 collections. This incroaso is as follows: In 
1937 M. bivl ttatus formed 4.16 percent of the total specimens collected and 
in 1938, 10,57 percent; Li. di ff orontlall s formed 4.32 . percent in 1937 and 
11.32 percent in 1933. Egg surveys show those two species bn tiic increase. 
II. mexicanus also increased from. 12.15 percent in 1937 to -51,59 percent in 
1938. 
Hatching began the latter part of April for II. ncxic anus and small 
local flights of this species began after. June 15 and continued through July. 
There were no major flights like those in the Dakotas, because there was not 
the pressure of enormous populations. Some second generation of this species 
hatched out around the first of August, but not nearly so many as in 1937. 
This was evidenced by a lessened need for control to protect fall grain. 
Small local flights of II. bivi ttatus also occurred in 'July. • There were sharp 
reductions in nymphal populations in parts of eastern Nebraska, because of 
continuous rains. Predicted infestations did not materialize. On the basis 
of estimated bait needs, the problem for 1939 will be about the sane as it 
was in 1938. 
