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Published byByron Knight Modified over 9 years ago
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Insect bad guys! You’ll never look at a bug the same.
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Anatomy 3 pairs=6 legs 3 Body parts
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Life Cycle-Insect Metamorphosis Complete –Egg –Larva (worms/catepillars) –Pupa (relatively dormnant) –Adult (flies, beetles, etc.) Incomplete –Egg –Nymph early-no wings Late-wings developing –Adult
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*Insects must be killed when they are actively feeding or moving on the plant.
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Complete Metamorphosis Video
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http://www.youtube.com/watch? v=nuPCu8lHC8I
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Damage Damage depends on the type of mouthpart Chewing-tear, chew or grind food Sucking: –Piercing: punctures plant and suck sap –Rasping: rasps or break surface and suck sap. Siphoning: have a coiled tube they dip into liquid food such as nectar and draw it in (ex. Butterfly) Sponging: have two sponge-like structures that collect liquid food and move it into the food canal. (ex. House fly)
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Chewing- Beetles Eat leaves Stems Flowers Fruits Nuts
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Beetles
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Chewing- Cutworms Usually attacks stems May eat other plants
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Cutworms: The larvae or caterpillars of some moths are called cutworms (Agrotis, Amathes, Peridroma, Prodenia spp.) because of the manner in which they cut down young plants as they feed.
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Chewing- Caterpillars Larva Moths Butterflies Fuzzy and hair Eat young leaves and stems Roll up in leaves, makes leaves curl
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Caterpillars
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Chewing- Grasshoppers Eat all parts of plants
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Grasshopper
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Sucking Puncturing the surface to take out the sap of a plant or other animal.
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Sucking- Aphids Pierce and suck juices Plant lice Cause stunted growth, yellow spotted leaves Sticky substance and black mold Attracts ants
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Aphids
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Sucking- Leaf Bugs Causes plants to look unhealthy Lose normal color and wilt
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Sucking- Mealy Bugs Pierce and suck from underside of leaves Suck in leaf axils Causes yellow appearance Sticky secretions
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Mealy bug
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Sucking- Thrips Chews and then sucks Causes plant tissue to become speckled or whitened Leaf tip withers Leaf curls and dies
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Thrips
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Sucking- Whiteflies Feeds on underside of young leaves Little flying white specks when plants are shaken
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White flies
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Sucking- Mites (Watch Out it isn’t an insect) Attack underside of leaf Causes leaves to turn gray to grayish Severe infestations cause webbing Insects can be red
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Mites
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cankerworms
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Group classwork Choose an insect from the list for your group. (Beatles, cutworms, grasshoppers, caterpillars, aphids, leaf bugs, Mealy bugs, thrips, whiteflies,mites or cankerworms As a group research your insect. Determine: 1.Mouthpart 2.Host(where does it live?) 3.Is it damaging or beneficial? How? 4.How would you get rid of it (damaging) or encourage it (beneficial)? Draw, color and label your insect on poster board. List neatly the information you found.
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Pest Management Integrated pest management (IPM) focuses on pest prevention by identifying, preventing and monitoring pests with the least amount of danger to the environment. 1.Identify the pest 2.Prevention by using methods such as crop rotation, pest resistant varieties and planting pest-free rootstock. 3.Monitoring new infestations can be the best controlled by early detections. 4.Traps may be used to check pest population. 5.If these methods are not affective, spraying of pesticides may be necessary.
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Lady beetles or lady bugs both adults and larva feed on soft bodied insects such as aphids, mites and eggs. Parasitic wasp attack caterpillar, butterfly or moth egg or pupa, beetle egg and other insects in the egg, larva or pupa stage. Praying mantis will eat just about any pest. Green lacewig larvae are predators that feed mainly on soft bodied insects. Predatory mites will attack spider mites at any stage of development inside a greenhouse or outside. Biological controls
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