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Where to look - Pests! Insects Nematodes Weeds Diseases

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Presentation on theme: "Where to look - Pests! Insects Nematodes Weeds Diseases"— Presentation transcript:

1 Where to look - Pests! Insects Nematodes Weeds Diseases
Rodents and other small mammals Original Presentation by Virginia Tech Modified by the Georgia Agricultural Education Curriculum Office November 2005

2 Basic classification Kingdom Phylum Class Order Family Genus Species
Kings Play Chess On Fine Green Silk

3 Starting at the beginning:
4 types of Phyla: Arthropoda ( insects, spiders, mites, millipedes) Aschelminthes (roundworms) Platyhelminthes (Flatworms, flukes, tapeworms) Mollusca (snails, slugs, clams) Arthropoda Phyla is divided into classes: Crustacea (Crayfish, sowbugs) Arachnida (spiders, ticks, mites) Insecta ( bugs, beetles, butterflies)

4 Classification cont. Insecta Class is divided into Orders:
Orthoptera (grasshoppers) Homoptera (aphids) Coleoptera (beetles) Lepidoptera (moths, butterflies) Diptera (flies) Dermoptera (earwigs) Hemiptera (true bugs) Hymenoptera (ants, bees)

5 Rules to fall into Classes and Orders
Arachnida: must have 2 body segments or parts must have 4 pairs of legs *some mites are major plant pests Insects: all have three body regions: head, thorax, abdomen 3 pairs of legs 1 pair of antennae 0 to 2 pairs of wings

6 Head Body Parts Antennae: segmented, vary in form. Mouthparts:
Primarily the smell organ Mouthparts: rasping-sucking chewing-lapping piercing-sucking

7 Body Parts Thorax: made of 3 sections, each containing a pair of legs
legs are jointed used for digging, feeling, swimming, and cleaning Wings - differ for each insect serve as an identification tool “-ptera” means with wings

8 Metamorphosis Development of the body after birth
Gradual (or incomplete) - insect’s life cycle changes from egg through the nymph to adult nymph, similar to adult except for size and color aphids, leafhoppers, mole crickets Complete - 4 life stages egg, larvae, pupae, adult larvae looks nothing like adult pupae is a transformation stage caterpillars-moths, grubs-beetles, maggots-flies

9 Beneficial Insects Not all insects are bad for agriculture They help:
pollinate plants improve soil destroy harmful insects

10 Other types of pests Nematodes Weeds
Southern root-knot nematodes on pepper plant roots. This weed is leafy spurge.

11 Other types of pests Diseases Rodents and other animals

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