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 Compare and Contrast complete and incomplete metamorphosis.  Identify and describe beneficial insects.  Identify and describe harmful insects. **For.

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Presentation on theme: " Compare and Contrast complete and incomplete metamorphosis.  Identify and describe beneficial insects.  Identify and describe harmful insects. **For."— Presentation transcript:

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2  Compare and Contrast complete and incomplete metamorphosis.  Identify and describe beneficial insects.  Identify and describe harmful insects. **For this lesson you will need to take notes on the different insects mentioned**

3  Plants naturally have inherited problems › These plants rarely can be cured. › The best way to avoid this is to choose plants best adapted for the region.  Florida has more different kinds of insects that any other state.

4  Most insects are NOT harmful to our plants.  Harmful insects are harmful due to: › Feeding Habits › Breeding › Shelter Habits

5  Metamorphosis: when insects pass through several stages during development.  Complete Metamorphosis  4 stages: Egg, Larva, Pupa, Adult  Examples: › Butterflies › Mealworms › Ladybugs

6  3 Stages: › Egg › Nymph › Adult  Examples: › Stinkbugs › Earwigs › Grasshopper › Cockroaches

7  Less than one half of one percent are actually pests.  Many beneficial insects feed on insects that are pests. › Example: Spiders, Assassin Bugs, Praying Mantids, Lacewings, Parasitic Wasps

8  Florida’s most beneficial insect!!  Both adults and larva prey on Aphids  Adults: oval, red and black, or black/yellow Adult eating Aphid Full Grown LarvaLadybeetle Eggs

9  Very large insects (up to 2” in length)  Can be either green or brown  Front legs modified for grasping prey  Feed on flies, honeybees, crickets & moths Adult Praying MantisEgg case (ootheca) and Larva

10  Generally black or brown (can be bright)  Found on foliage where they attack prey  Caterpillars are their favorite lunch!!  Typically ambush their prey.

11  Commonly found on grasses, row crops, shrubs and trees.  Feed on Aphids which nicknames them “Aphidlion”  Green with copper eyes

12  Extremely important insects!!  Very small (1/8”) and go unnoticed  They lay eggs on the body of a host insect  Immature stage consumes the host  Prey on: › Scales, Whitefiles, Aphids, Leafminers and caterpillars

13 Predaceous, feed on a wide variety of insects Paralyze their prey with a venom bite Most use webs but most beneficial spiders do not spin webs. Examples: Wolf, Jumping and Crab

14  Pests of plants are typically divided into groups according to the way they damage plants  Most insects damage plants with their mouthparts. › Piercing-Sucking Mouthparts › Chewing Mouthparts (Foliage Feeding Insects)

15  Tube like mouthpart which inserts into a food source › Plant, other insect, humans etc.  Cause damage to plants: › Stunting › Yellowing  Often are not affected by exterior pesticides as they feed on the interior of leaves

16  Feed on leaves, flowers and also attack the roots of plants.  Mouthparts move side to side similar to scissors.  Examples include: › Caterpillar › Beetle › Grasshopper › Katydids

17  Most serious pests on many ornamental plants.  Many species of soft and hard scales in Florida.  Cause yellow spots to appear on the top sides of leaves  Secrete a waxy covering over their bodies when mature making them hard to control.

18  Pests to foliage plants, annuals and perennials.  Excrete honeydew which serves as medium for fungus.  Soft bodied Scale  Common on: › Azalea › Coleus › Croton › Cactus

19  Pear shaped  Will infest any plant  Cause damage by sucking out plant juices  Transmit viral diseases  Mostly female and reproduce without mating  Each produce 50 – 100 daughters which reproduce in 8 days!!

20  Common on ornamental plants  Resemble moths  Plants become pale or spotted  Can transmit viruses  Deposit eggs on underside of leaves  Eaten by Lady Beetles and lace wings

21  Brown with clear wings.  Damage on top side of leaf as white specks  Shiny black spots of excrement on underside of leaves  Cause damage to: › Azalea › Hawthorns

22  Very small and slender  Remove plant juices  Life cycle takes 2-4 weeks  Foliage feeders  Infested plants have stippled appearance and small brown specks.

23  Immature stage of moths/butterflies  Vary in color and hair stinging rose   Devour foliage leaves holes and irregular areas or can strip leaves completely

24  Consume large quantities of foliage on ornamentals  Adults lay eggs clumped together in pods (in soil)  1 complete life cycle per year  Feeding habits vary greatly

25  Hard shelled insect  Chew off parts of the foliage or flowers of many plants.  Mostly active at night.  Larvae feed on the roots or bore through stems and branches.

26  Most people are unaware of the harms and benefits of the many insects that reside in Florida.  You are to create a Public Awareness Poster and insect model for your specific insect.  This is a two part project:  Part 1: Create a poster displaying facts about either your Beneficial or Harmful insect  Part 2: Create a model of the insect using a variety of materials.

27  Things to include on your poster:  Life cycle of insect  Description of insect  Harms or Benefits  Where found (plants)  Things to include for your insect model:  Needs to be actual model of insect!!  Including proper mouthparts, legs, body segments, eyes, etc.  You may use a variety of materials (clay, foam, putty, food, straws etc. ) Points for the project are as follows: -Pest Awareness Poster: 25 points -Pest Model: 15 points Total Points: 40 points

28 Beneficial: -Ladybeetles -Praying Mantids -Assassin Bugs -Lacewings -Parasitic Wasps -Spiders Harmful: -Scales -Mealybugs -Aphids -Whiteflies -Lacebugs -Thrips -Caterpillars -Grasshoppers -Katydids -Beetles


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