J. G. Charles, V. White. 1988. Airborne dispersal of Phytoseiulus persimilis (Acarina: Phytoseiidae) from a raspberry garden in New Zealand. Experimental & Applied Acarology 5: 47-54.

Abstract. Airborne dispersal of the predatory mite Phytoseiulus persimilis Athias-Henriot and its prey Tetranychus urticae Koch was recorded by trapping mites in silicon grease on microscope slides mounted on a cross-shaped frame placed horizontally 2.5 m above ground level (0.5 m above the top of the crop). Both species were also recorded on raspberry foliage, and population changes there were closely mirrored by numbers caught in the trap. Phytoseiulus persimilis was trapped on slides and recovered from foliage until leaf fall which occurred 6 weeks after the last prey was found. The decline in predator numbers on the foliage closely followed the decline in prey numbers, but the decline of predators on the aerial trap more closely mirrored the decline in the proportion of sample leaves with predators.