none not entered Systematics; Taxonomy; Key; Animals and man; Control; Nutrition; Diet; Parasites diseases and disorders; Hosts Arthropoda; Biological control; Methods review, role of beneficial fauna on fruit orchards; Prey; Insecta; Taxonomic keys to predators of orchard pests Comprehensive Zoology; Insecta; Insect hosts; Taxonomic keys to parasites of orchard pests Acari; Key to families; Predators of orchard pests, p. 210 Phytoseiidae (Acari); Key to species; Predators of orchard pests, p. 213 Araneae; Key to species; Predators of orchard pests, p. 220 Coleoptera; Key to families; Predators of orchard pests, p. 174 Carabidae; Key to species; Predators of orchard pests, p. 176 Cantharidae; Key to species; Predators of orchard pests, p. 187 Coccinellidae; Key to species; Predators of orchard pests, p. 182 Diptera; Key to families; Predators of orchard pests, p. 189; Key to families; Parasites of fruit orchard pests, p. 41 Chamaemyiidae; Key to species; Predators of orchard pests, p. 200 Syrphidae; Key to species; Predators of orchard pests, imagos, p. 192, larvae, p. 196 Tachinidae; Key to genera and species; Parasites of Lepidoptera, p. 153 Tachinidae; Key to species; Parasites of Coleoptera, p. 81 Hymenoptera; Key to superfamilies; Parasites of fruit orchard pests, p. 41; Key to families; Parasites of fruit orchard pests, p. 41 Ichneumonoidea; Key to species; Parasites of Aphidoidea (Hemiptera), p. 52 Braconidae; Key to genera and species; Parasites of Lepidoptera, p. 106 Braconidae; Key to species; Parasites of Coleoptera, p. 79; Key to species; Parasites of Diptera, p. 84; Key to species; Parasites of Symphyta, p. 83 Ichneumonidae; Key to genera and species; Parasites of Lepidoptera, p. 84 Ichneumonidae; Key to species; Parasites of Symphyta, p. 82; Key to species; Parasites of Coleoptera, p. 78 Cynipoidea; Key to species; Parasites of Psylloidea (Hemiptera), p. 50; Key to species; Parasites of Aphidoidea (Hemiptera), p. 52 Chalcidoidea; Key to genera and species; Parasites of Lepidoptera, p. 135 Chalcidoidea; Key to families; Parasites of Coccoidea (Hemiptera), p. 61; Key to species; Parasites of Coleoptera, p. 80; Key to species; Parasites of Symphyta, p. 83; Key to species; Parasites of Psylloidea (Hemiptera), p. 50; Key to species; Parasites of Coccoidea (Hemiptera), p. 61; Key to species; Egg parasites, p. 46; Key to species; Parasites of Aphidoidea (Hemiptera), p. 52 Proctotrupoidea; Key to families; Parasites of Coccoidea (Hemiptera), p. 61; Key to species; Parasites of Coccoidea (Hemiptera), p. 61; Key to species; Egg parasites, p. 46 Ceraphronoidea; Key to species; Parasites of Aphidoidea (Hemiptera), p. 52 Heteroptera; Key to families; Predators of orchard pests, p. 167; Key to species; Predators of orchard pests, p. 167 Raphidioptera (Megaloptera); Key to species; Predators of orchard pests, p. 210 Neuroptera; Key to families; Predators of orchard pests, p. 201 Chrysopidae (Neuroptera); Key to species; Predators of orchard pests, p. 203 Coniopterygidae (Neuroptera); Key to species; Predators of orchard pests, p. 208 Hemerobiidae (Neuroptera); Key to species; Predators of orchard pests, p. 205 Arthropoda; Key; Classes, predators of orchard pests, p. 164; Key; Subclasses, predators of orchard pests, p. 164; Key to orders; Predators of orchard pests, p. 164