Citrus leafminer, Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae), is an invasive, multivoltine pest of citrus that became established in Florida in 1993. The female sex pheromone of P. citrella is a 30:10:1 blend of (Z,Z,E)-7,11,13-hexadecatrienal (triene), (Z,Z)-7,11-hexadecadienal (diene), and (Z)-7-hexadecenal (monoene), respectively. Trap catch is disrupted by applying either the blend or triene alone, and several substrates have been used to release these pheromone components, including rubber dispensers and a flowable wax matrix called SPLAT CLMTM (ISCA Technologies, Riverside, California) that can be applied using hand-applied dispensers or machines that propel dollops into the tree canopy. P. citrella is disrupted effectively by a non-competitive mechanism and disruption can be achieved at remarkably low deployment rates of pheromone. Therefore, low application density emitters of pheromone, such as ‘Puffers’, are uniquely suited for potential effective and economical management of this pest by mating disruption. Here, we describe a field evaluation of Isomate CTLM emitters of pheromone at varying densities of emitter deployment per ha (0, 1 / 2ha, 1 / 1 ha, 1 / 0.7 ha, 1 / 0.5 ha, 1 / 0.4 ha).
