WYOMING-- (Continued) 
Inversion 
Percent 
1, Melanoplus mexicanus 32 1« 
2, MelanopliTs foedus foedus — 13 2, 
3, Aeolopl-as t-urn"b-ulli 13 3« 
H, Melanoplus angustipennis — 9 ^« 
5» Melanoplus "bivittatus — ^ 6 5» 
6, 1>wenty othor specier. 27 6, 
Nymphs, 
Undetermined adults, 
Idle land 
I, Melanoplus mexictinus 68 1. 
2, Anlocara elliotti 11 2, 
3. Ageneotettix deorum 7 3« 
Melanoplus packardii 3 ^« 
5. Melanoplus angustipennis — - 3 5» 
6, Ten other species 8 6, 
Nymphs , 
Undetermined adults, 
Weodg ftnd" Sa^Q 
Percent 
Melanoplus mexicanus 31 
Camnula pellucida 10 
Ageneotettix deorum 10 
Aulocara elliotti 8 
Melanoplus f eraur-ru'brum 6 
Thirty-five other species > 35 
Nymphs , 
Undetermined adults, 
Ahandoned land (fields ) 
Aulocara elliotti 27 
Ageneotettix deorum 26 
Camnula pellucida 13 
Molanoplu^ mexicanus 13 
Amphitornus coloradus — 6 
Four other species 15 
Nymphs , 
Undetermined adults, 
Environment not shown 
1. Melanoplus mexicanus 80 
2, Camnula pellucida 7 
. Melanoplus "bivittntus 5 
• Melanopltxs packardii 5 
5« Aulocara elliotti 3 
6, No other species 
Nymphs , 
Undetermined adults, 
Percentage of grand total 
1, Melanoplus mexicanus 25 
2, Melanoplus f emur-ruhrum ~. 
3, Melanoplus "bivittatug 10 
4, Camnula pellucida 8 
5, Ageneotettix deorum — ^ 
6, Sixty-eight other species - — - 39 
Nymphs, 5.35 
Undetermined adults, .01 
The most spectacular event of the 1937 outhroak was the infestation of 
Dissosteira longipennis in Colorado, New Mexico, and Texas, The most interesting 
from an entomological standpoint ^^as the second generation of Melanoplus mexi^ 
canu^, which "began hatching about August 20 and actually produced a second out- 
"break of hoppers in the winter-wheat sections. This species has steadily ad« 
vanced in its importance over other speciec; since 1933» There are, however, 
fairly well defined areas where certain species are dominant, Melanoplus femur- 
rub rum is now dominant in the areas comprising northeastern Iowa, south-eastern 
Minnesota, southern Wisconsin, northern Illinois, Idnho, and Utah, M, different- 
ial is ig dominant or very important in southern Iowa, northern Missouri, eastern 
Kansas, eastern Nebraska and most of Oklahoma and Texas, M. mexicanus is the 
most important species in the Dakotas, western Nehranka, Kansas, and ' most of 
Montana and Wyoming, Dissosteira longipenr.is is by far the dominant species in 
the northeastern counties of New Mexico, the Western Panhandle of Texas, the 
Panhandle of Oklahoma, and southeastern cotmties of Colorado, Camnula pellucida 
was of local importance in the States farthest north. 
