Grasshoppers of Wyoming and the West

Entomology

Differential Grasshopper

Melanoplus differentialis (Thomas)

Table 1. Activity of nymphs and adults of the differential grasshopper, Melanoplus differentialis (Thomas) correlated with air and soil temperatures (after Parker and Shotwell 1932).

		Nymphs		Adults
Average Temperature °F
Name of Activity	Description	Air	Soil	Air	Soil
Beginning of activity	Start of descent	65	-	68	-
Beginning of normal activity	Start of feeding	68	-	68	70
-	Start of migration	75	-	78	-
-	Start of oviposition	-	-	70	-
Beginning of escape from heat	Climbing and seeking shade on plants	90	112	90	112
-	Flying in circles or flying with wind	-	-	90	112

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