Investigations on the presence of the potato-tuber moth, Phthorimaea operculella Zeller (Lep., Gelechiidae) in storehouses by the use of the pheromone trap.
Tests in 1976-78 at Casablanca in Morocco, both in the field and in vegetable packing stations, with different methods of trapping the potato pest Phthorimaea operculella (Zell.) showed that the most effective traps were pans of water over which were hung rubber septa impregnated with synthetic sex pheromone of this moth, a mixture of trans-4,cis-7-tridecadienyl acetate and trans-4,cis-7,cis-10-tridecatrienyl acetate. Catches in these traps indicated the presence of P. operculella throughout the year. These experiments demonstrated the usefulness of sex-pheromone traps for early detection of infestation of potatoes either in the field or especially in storehouses.