Grasshoppers of Wyoming and the West

Entomology

Key to Wyoming Grasshoppers: Gomphocerinae

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19a Fastigium lacking a conspicuous infra-marginal impression, with a weak medio-longitudinal crest best indicated anteriorly, sometimes absent. Tegmina of female reduced to half or less the length of the abdomen, inner wing rudimentary in both sexes. go to 20

 
Note weak crest.
Adult female (note reduced tegmina).
  Note weak crest.
Adult female (note reduced tegmina).

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19b Fastigium with a conspicuous infra-marginal impression, lacking a medio-longitudinal carina. Organs of flight well developed. go to21

 
Note impression on fastigium and absence of medial ridge.
Adult female (note fully developed wings).
  Note impression on fastigium and absence of medial ridge.
Adult female (note fully developed wings).

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