Table A. Natural Pest Control by Insect Species
Pest Insect                                                   Predator Insect
Aphids                                                Aphidius
Aphids                                                Aphidoletes
Thrips, spidermites, fungus gnats             Beneficial mites
Eggs of many pest insects                      Damsel bugs (Nabidae)
Whiteflies, aphids, thrip, spider mites        Dicyphus
Slugs, small caterpillars and grubs            Ground beetles
Aphids, mealybugs and others                 Hoverflies
Scale, aphids, mites, soft-bodied insects   Lacewings
Aphids, mites                                       Ladybugs
Thrips, aphids, mites, scales, whiteflies     Pirate bugs
Caterpillars; beetle and fly larvae            Tachinid flies
Whiteflies; moth, beetle and fly larvae      Parasitic wasps

What to Plant to Attract Beneficial Insects (Predator Insects)

Predator Insect                                          What to Plant (Insectary Plant)
Lacewings, aphidius, ladybugs                 Achillea filipendulina
Hoverflies                                            Alyssum
Ground beetles                                     Amaranthus
Ichneumon wasp, ladybugs, lacewings      Anethum graveolens (dill)
Lacewings                                           Angelica gigas
Ladybugs, hoverflies                              Convolvulus minor
Hoverflies, parasitic wasps, lacewings       Cosmos bipinnatus
Dicyphus                                             Digitalis
Lacewings, ladybugs, hoverflies               Daucus carota (Queen Anne's lace)
Damsel bugs, ladybugs, lacewings            Foeniculum vulgare (fennel)
Pirate bugs, beneficial mites                   Helianthus annulus
Hoverflies                                            Iberis umbellata
Hoverflies, parasitic wasps                     Limonium latifolium (Statice)
Aphidius, aphidoletes, hoverflies              Lupin
Parasitic wasps, tachinid flies                 Melissa officinalis (lemon balm)
Parasitic wasps, hoverflies, tachinid flies   Petroselinum crispum (parsley) 
Pirate bugs, beneficial mites                   Shasta daisy
Pirate bugs, aphidius                             Sunflowers
Ladybugs, lacewings                             Tanacetum vulgare (tansy)
Dicyphus                                            Verbascum thaspus