Grasshoppers of Wyoming and the West

Entomology

Key to Acrididae Subfamilies

Previous Step (A')

B Vertex and front meeting at an angle, face slanted back [this character is difficult to discern in a few genera]; median carina of pronotum low; wings usually colorless; antennae usually slightly flattened, sometimes strongly flattened.
 

Head and pronotum of Paropomala wyomingensis	Head and pronotum of Acrolophitus hirtipes	Head of Chorthippus curtipennis

 

Head of Amphitornus coloradus	Head of Aeropedellus clavatus	Head of Ageneotettix deorum
	{Note that in many cases the face only weakly slants back. Also note that occasionally, as in A. hirtipes, the median carina is raised.}
Head of Stenobothrus brunneus		Head of Phlibostroma quadrimaculatum

Subfamily GOMPHOCERINAE
B' Vertex and front forming a rounded surface; face nearly vertical, not strongly slanted back; median carina of pronotum usually distinctly raised to form a sharp ridge; wings often brightly colored; antennae usually thread-like, not flattened. {Also, large, thick-bodied, without distinctly raised median carina; reduced tegmina spotted with black.}
 

Like These

Head of Trimerotropis pallidipennis	Head of Arphia pseudonietana
Head of Metator pardalinus	Pronotum of Spharagemon collare

 

Grasshoppers of Colorado Contents