Flying ability of locust adults(Locusta migratoris manilensis) infected by Nosema locustae washeavily reduced, compared with that of the healthy, as a result of a test on flying ability with the facilitiesconnecting with a microcomputor.The average flying distance during the test(18 hrs) of infected adults was only 864m, but that of thehealthies was 14279. 75m. The mean flight speed of infected adults was 0.15 m/sec., however, the healthyones could reach at 1. 23m/sec. The maximum sustain flying time of inf...