Dispersal of the Pink Bollworm By Flight or Wind Carriage of the Moths

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Abstract
Pectinophora gossypiella moths were taken up to 3000 ft. above ground level in airplane collections and in large numbers on flight screens. Trap plots located in Texas ranch country from 25 to 65 miles from the nearest cotton became infested late in the season in 5 of 6 years. The prevailing wind is from the heavily infested Laguna District of Mexico toward the United States, and the areas infested in western U. S. A. are in the general direction of the wind currents. The total wind movement in the Laguna District during Sept., 1920-1931, was closely correlated with the intensity of infestation in Texas.

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