Key to the Adults of the Short-Horned Grasshopper Families and Subfamilies

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4a Intercalary vein of tegmina often poorly developed or absent; hind femur of male with stridulatory pegs. Most species with slanting face...
Subfamily GOMPHOCERINAE (SLANT-FACED GRASSHOPPERS)
 
Slanting face seen in profile.
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4b Intercalary vein of tegmina well developed except in Heliastus; male with stridulatory pegs on intercalary vein. No species with slanting faces...
Subfamily OEDIPODINAE (BAND-WINGED GRASSHOPPERS)
 
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Grasshoppers of New Mexico Contents