Pratt, P.D., Coombs, E.M., Croft, B.A., 2002. Phytoseiid mite fauna on gorse, Ulex europaeus L., in Western Oragon, Usa with new records for Phytoseiulus persimilis Athias-Henriot and Amblyseius graminis (Chant) (Acari: Phytoseiidae). Pan Pacific Entomologist, 78: 215-218.