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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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