Beneficials class 5
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Beneficials class 5



Insects presentation

Insects presentation



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    Beneficials class 5 Beneficials class 5 Presentation Transcript

    • Beneficial Insects Commonly Found in the Garden and Landscape
    • If you build it…… . . . . They will come!!!
    • Attracting Beneficials
      • Complex vegetation structure can provide more niches for natural enemies.
      • Light, shelter, and other abiotic factors also play a role.
      • Flowers!
    • Complex Vegetation Structure Canopy Trees Understory Trees Groundcover Turf Shrub
    • Euonymus scale
      • Euonymus plants surrounded by flowering plants had less scale compared to those surrounded by bark mulch (Hanks and Sadof 2001).
      Flowers help attract beneficial insects
    • Flowers that Attract Beneficial Insects
      • Small flowers
        • Dill, Fennel, Basil
        • Yarrow, Sedum
        • Goldenrod, Joe Pye Weed
      • Daisy flowers
        • Purple Coneflower, Cosmos
      • Others
        • Salvias, Mints, Asclepias, Zinnia
    • Limit Pesticide Use!
      • Pesticides kill beneficials too!
      • Pests return quicker than beneficials
      • Insecticidal Soap, Horticultural Oil, and B.t. are less toxic to natural enemies
    • No. of plants infested with scale insects Landscapes under cover sprays for longer periods of time have higher levels of scale insect infestation.
    • Assassin Bugs Assassin bugs prey on aphids, caterpillars, beetles, leafhoppers,and other insects. They do not like to be handled.
    • Big-eyed Bugs These small insects with big eyes attack spider mites, thrips, aphids and other insect eggs .
    • Damsel Bugs Damsel bugs resemble assassin bugs. They feed on aphids, leafhoppers, mites and caterpillars.
    • Green Lacewings Green or brown, the lacewing, or aphid lion , is known to eat as many as 600 aphids. larva adult eggs
    • Ground Beetles These beetles are large, dark, and sometimes metallic. They feed along the ground on soft-bodied insects, especially at night. They are usually fast moving.
    • Lady Beetles Lady beetle adults and larvae attack aphids, mites, insect eggs and small insects. adult larva
    • Tiny Parasitic Wasps Micro- and mini-wasps can sting and lay eggs in caterpillars, aphids or insect eggs. The larvae consume their prey from within. Braconid wasp cocoons
    • Tachinid Flies Heavily bristled tachinid flies lay eggs on caterpillars, beetle larvae, and bugs. Parasitized monarch caterpillar and chrysalis
    • Predaceous Stink Bugs Many stink bugs are pests, but predaceous stink bugs feed on beetles and caterpillars both as adults and colorful nymphs .
    • Predatory Mites Predatory mites move rapidly to catch and feed on their plant-eating counterparts. They are often white, tan, or orange.
    • Soldier Beetles Adults resemble fireflies and are attracted to milkweed,hydrangea, and goldenrod. They eat aphids, caterpillars, mites, grasshopper eggs, and small beetles .
    • Syrphid Flies adult larva The harmless adults resemble bees, but the small larvae consume many aphids.
    • Minute Pirate Bug These bugs attack thrips, spider mites, aphids and small insects. larva
    • Wasps, Hornets, & Spiders Though often considered pests, these insects feed heavily on caterpillars, flies and other soft-bodied insects.
    • Praying Mantids Mantids have a good reputation, but eat relatively few insects in the garden.
    • Carolina Mantid Egg Case Chinese Mantid Egg Case
    • Chinese Praying Mantis Up to 5” long
    • Carolina Mantid Female Male Juvenile 2” long when mature
    • Are Mantids Beneficial?
    • Green Anoles
      • Native lizard – voracious insect eaters
    • Bug Eating Plants!
      • Pitcher Plants – Sarracenia species
      • Venus Fly Trap – Dionaea muscipula
      • Grow in very poor, wet soils
      • Get nitrogen from digesting bugs!
      • Not a practical form of insect control!
    • Next Week:
      • Tues, Sept. 1, 9:30
        • Extension Center, Burgaw
        • Plant Diseases and Diagnosing Plant Problems , chapters 7 & 19
      • Thurs, Sept. 3, 1:30
        • Poplar Grove Plantation
        • Integrated Pest Management and Pesticide Safety , chapter 9