Orthoptera Species File (Version 5.0/5.0)
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Characters to separate taxa in Acrididae

        From North America
Lateral foveolae of vertex invisible from above, or foveolar area forms right or acute angle with plane of fastigium so it is invisible from above
Lateral foveolae visible from above or, if foveolae are obsolete, foveolar area forms obtuse angle with plane of fastigium so it is visible from above
    From North America (partial)
    From North America (partial)
Source: Otte, D. 1981. North American Grasshoppers. 1:274 pp.
NOTE: This key block needs additional work by a taxonomist.

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