366 
N6RTH DAKOl'A 
n * . ■ - » 
The percentages of individuals of the various species present in North 
Dakota, arranged according to cro} 3 s infested, are stunmarized as follows; 
Small grain (eastern) Percent Small grain (western) Percent 
1 . Melanoplus mexicanus — — — - 60 
2. M . , femur -ruh rum 9 
3. M, hivittatus- 8 
4 . M . packardi i — 7 
5. Ageneotettix deorum ; — 5 
6. 21 other spp, and tmdot, 11 
Native grassland (eastern) 
I 
1. Ageneotettix deorum 24 
2. Melanoplus mexicanus — 18 
3. M. dawsoni 6 
4. M. infantilis 5 
5. M. gladstoni 5 
6. 39 other spp., undet . , crickets, 
and nymphs 42 
Alfalfa and sweetclover 
1. Melanoplus mexicanus '71 
2. M, hivittatus 5 
3. M, differential is — 4 
4. Ageneotettix deoirum-^- 4 
5. M. packardi! 4 
6. 17 other species 12 
Native grassland (western) 
1. Ageneotettix deorum — 23 
2. Amphitornus coloradus 12 
3. Phlihostroma quadrimaculatum 12 
4. M. mexicanus 8 
5. Camnula pellucida 7 
6. 51 other species 38 
Idle land 
1. Melanoplus mexicanus 35 
2. M. femur-ruhrum 20 
3. M,. hivittatiAs 16 
4. Ageneotettix deorum 12 
5. M. packardi i 7 
6. 20 other spp., and undet, 10 
1, Melanoplus mexicanus 45 
2, M, packardi! 14 
3, M. femur-ruhrum 11 
4, Ageneotettix deorum 9 
5, M, hivittatus 8 
6, 26 other spp. and undet. 13 
Sorghum 
1. Melanoplus mexicanus 37 
2. M. hivittatus 17 
3. M, packardii 11 
4, M. femur-ruhrum 11 
5, Dissosteira Carolina 8 
6, 13 other species 16 
Corn 
1. Melanoplus mexicanus 38 
2. M. hivittatus 28 
3. M, packardii 8 
4. M. femur-ruhrum 7 
5. Camnula pellucida 4 
6. Dissosteira Carolina 4 
7. 11 other spp. and undet. 11 
Flax 
1. Melanoplus mexicanus- 58 
2. M. femur-ruhrum 15 
3. M. hivittatus 10 
4. M. packardii 6 
5. Dissosteira Carolina 2 
6. 12 other spp. and nymphs 9 
Millet 
1. Melanoplus mexicanus 56 
2. M. hivittatus 14 
3. M. femur-ruhrum 7 
4. M. packardii 7 
5. M. differential! s 6 
6. 14 other species 11 
Grand total Percent 
1 , Melanoplus mexicanus 37 
2. Ageneotettix deorum 12 
3, M. hivittatus 7 
4, M, femur-ruhrum 7 
5. M, packardii 5 
6. 62 other spp., undet., crickets, 
and nymphs 32 
