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IOWA 
All of the collections were nr.de in the western third of the State. 
The whole of Iowa lies in the bluesteo sod area of the tall-grass prairie 
region. Most of this original vegetation has "been entirely replaced "by culti- 
vated crops and the country is cut up into snail fields having a great length 
of fencerows, roadsides, and other types of field margin. About 60 to 70 
percent of the total land area is under cultivation. 
A total of 2,991 specimens were collected, representing 21 species 
taken in 5 habitats. This is only about half the number of species taken in 
the short-grass region. The distribution of the 5 most important species is 
given for each habitat. Melanoplus femur- rub rum was, perhaps, the most 
numerous species. M. mexicanus was second. There was a rather even distribu- 
tion of grasshoppers over some 27 counties in the western third of the State. 
This is an increase over last year. 
Iowa 
Small grain s 
Percent 
1. Melanoplus mexicanus 59 1. 
2. Melanoplus femur- rubrum 24 2. 
3. Melanoplus diff erentialis — 5 3. 
4. Ageneotettix deorun 4 4. 
5. Melanoplus packardii 2 5. 
6. Six other species 6 6. 
Legumes 
1. Melanoplus femur-rubrum 60 1. 
2. Melanoplus mexicanus 36 2. 
3. Ageneotettix deorum 2 3. 
4. Melanoplus diff erentialis-- 1 4. 
5. Melanoplus bivittatus 1/2 
6. Six other species 1/2 
Pasture 
1. Melanoplus mexicanus 65 1. 
2. Melanoplus femur-rubrum 24 2. 
3. Ageneotettix deorum 6 3. 
4. Melanoplus diff erentialis — 2 4. 
5. Lissoeteira Carolina 1 5. 
6. Hine other species 2 6. 
Roadside 
Percent 
Melanoplus femur-rubrum 84 
Melanoplus mexicanus 12 
Melanoplus differential! s 2 
Melanoplus bivittatus 1/2 
Brachystola magna 1/2 
Five other species 1 
Tfeed patch 
Melanoplus mexicanus 65 
Melanoplus femur-rubrum 28 
Ageneotettix deorum 5 
Melanoplus diff erentialis 2 
Percentage of grand total 
Melanoplus femur-rubrum 52 
Melanoplus mexicanus 41 
Ageneotettix deorun 3 
Melanoplus differential! s 2 
Dissosteira Carolina 1 
Sixteen other species 1 
