Synopsis
Excerpt from The Canadian Entomologist, 1922, Vol. 54
In the case of this species, the length of flight coupled with the fact that 'hoppers often leave sucent fields. Has an important bearing on control measures. It means that when the residents of some one territory have been delinquent in control measures, and those of some other territory have waged a successful campaign, the parties of the first instance may cause the reinfestation of the fields of the parties of the second instance and upset some of their good work. Also farmers in infested areas do not well understand the outcome of such an extensive migration and either grasp at the hope that all their 'hoppers will leave or believe that poisoning is useless. Thus a control campaign may be demoralized at just the time operations should be continued with intensity.
Observations on Flight and Relation of Weather Conditions to Such.
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