A Timing Sex-Pheromone Trap with Special Reference to Codling Moth Collections1

Abstract

A timing sex-pheromone trap for Laspeyresia pomonella (L.) was designed which utilizes a moving sticky belt as the collecting surface for a modified carton trap holding captive live females as the attractant source. The collecting belt moves at a regulated continuous rate and indicates when males are caught by their position on the belt. The trap showed that the flights of male codling moth are initiatcd well before sunset and terminate when temperature reaches about 61°F. The trap was effective also in timing the catch of adults of walnut husk fly, Rhagoletis campleta Gresson, when ammonium carbonate was used as the attractant.