Abstract
An account is given of catches of macroptterous brown planthopper adults on grease traps placed around rice crops.Between December 1965 and November 1966 flight activity was recorded in each month.There was no differece between mean monthly catches of the southeast wind season (April-October) and the northwest wind season (Octorber-April) which had higher rainfall.For a twenty-four hour period in October flight activity peaked around sunset.