The effect of height and density of sex pheromone traps on captures of male fruittree leafroller, <i>Archips argyrospilus</i> and threelined leafroller, <i>Pandemis limitata </i>(Lepid.: Tortricidae)
Keywords:
pheromone traps, fruittree leafroller moth, <i>Archips argyrospilus</i>, threelined leafroller, <i>Pandemis limitata</i>, Lepidoptera, TortricidaeAbstract
When sex pheromone traps in the upper third of a standard apple tree were compared with traps at head height, the upper traps captured far more fruittree leafroller moths (<i>Archips argyrospilus</i> (Walker) than the lower traps. The results with threelined leafroller (<i>Pandemis limitata</i> (Rob.) were reversed: traps at head height captured nearly twice as many moths as traps in the upper portion of a tree. Trap captures increased with trap/area up to 1 trap/ha. This density is probably sufficient for monitoring purposes.References
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