GRASSHOPPER CONTROL IN RELATION TO CEREAL 
AND FORAGE CROPS. 
CONTENTS. 
Page. Page. 
Principal kinds of grasshoppers in- Life histories and development of 
OLIV Ce eee ce Sen on TN et Er 3 grasshoppers in general_________ 8 
Mariner Ol Inv Ury =< = eee ee ek 7 | Natural enemies of grasshoppers__~ 10 
Conditions favorable to outbreaks of EStorical 3 eee oe ee ee 12 
STASSHOPDEIS= 2 + oto See ee 7 (eComerolo med snmese-= = ae 2S 14 
PRINCIPAL KINDS OF GRASSHOPPERS INVOLVED. 
ANY kinds of grasshoppers are injurious to grains, grasses, and 
forage crops throughout the United States. The more im- 
portant are the differential,’ the two-striped,? the Carolina,’ the 
jessor migratory,* the pellucid or clear-winged,’ the red-legged,® the 
California devastating,’ the southwestern lubber,’ the Florida lub- 
ber? amd: the 
New Mexico 
long-winged 
grasshopper.” 
In the follow- 
ing pages is given 
a short descrip- 
tion of these 
grasshoppers and 
the regions in 
which they Occur, Fre. 1.—Southwestern lubber grasshopper (Brachystola magna) : 
together wi th Adult female. Natural size. (Original.) 
their life history, the crops attacked, and measures for controlling 
them. 
The southwestern lubber grasshopper (fig. 1), a very large species, 
lives in the semiarid regions of the Southwest. It is usually pale 
green in color, speckled and marked with pink and brown, and is 
wingless throughout its entire life. It sometimes becomes injuriously 
abundant on the cattle ranges and dry farms of New Mexico and 
Arizona, but is found throughout the Great Plains region from 
1 Melanoplus differentialis Thom. 6 Melanoplus femur-rubrum De G. 
2 Melanoplus bivittatus Say. 7 Melanoplus devastator Scudd. 
3 Dissosteira carolina L. 8 Brachystola magna Gir. 
4 Melanoplus atlanis Riley. ® Dictyophorus reticulatus Thunb. 
5 Camnula pellucida Scudd. 10 Dissosteira longipennis Thom. 
54785°—Bull. 747—16 3 
