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Published byDarcy Atkinson Modified over 8 years ago
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Common insect orders
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Insects are the most species- rich group of organisms on earth as indicated in this species-scape. The size of the organism reflects the number of described species.
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Parts of an insect
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HeadThorax Abdomen
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Parts of an insect HeadThorax Abdomen 3 pairs of legs
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Parts of an insect HeadThorax Abdomen 3 pairs of legs Wings and legs on thorax
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Important areas to study to identify common insect orders HeadThorax Abdomen 3 pairs of legs
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Mouthparts: Chewing mandibles
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Mouthparts: Piercing Sucking Sponging-sucking Coiled
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Order Coleoptera Beetles
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Bombardier Beetles When these beetles are threatened, they emit a toxic liquid from their anal glands. The liquid vaporizes into a “Puff”, making a protective screen. It can stain a human’s skin.
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Coleoptera (Beetles) Largest order in the animal kingdom 1 in 4 animals are beetles 300,000 species world wide, 30,000 in the U.S. All beetles can fly Larvae are called “grubs” Complete Metamorphosis
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Tiger Beetles Tiger beetles are ferocious predators. Strong jaws to hold prey. Active at night, easy to spot with flashlight, due to metallic colors they exhibit.
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Aquatic diving beetles This whirligig beetle, is a predator as a larva and adult. They eat small fish, amphibians, other aquatic insects.
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Scarab Beetles Scarab beetles eat dung and other organic matter. One group of Scarab beetles are called “Dung Beetles”
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Ground beetles Most common beetle family, over 3,000 species in North America. They are found under logs, rocks, and leaves.
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Blister Beetles (Ground Beetle) Blister beetles can emit a chemical (cantharidin), which causes blisters on human skin
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Coleoptera (beetles) Greek “koleos”= sheath, “ptero”= wing
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Coleoptera (beetles)
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Spot ID Chewing mouthparts
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Coleoptera (beetles) Spot ID Chewing mouthparts Forewings (elytra) form hard shell covering hindwings
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Order Hymenoptera Social Insects 2nd largest order of insects: behind Coleoptera
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Hymenoptera (bees, wasps, ants) Greek “hymen”=membrane, “ptero”=wing or Hymen, the Greek god of marriage because the forewing & hindwings are joined together with small hooks Hooks not shown
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Social Insects Bees Ants Wasps Sawflies
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Social insects have a way to communicate Bees- bees can dance. The type of dance they do tell others in the hive the direction of the food
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Social insects have a way to communicate Ants- Ants drop formic acid as a trail for other ants to follow to find a food source
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Bees Bees are well known to aid pollination. Pollen is a sticky substance, it sticks to the legs of bees as they fly from flower to flower
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Bees are beneficial Honey production Wax production Pollination Enemies of crop pests- particularly lepidopteran caterpillars
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Bees lose their stinger when they sting, many types of bees die due to this
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Wasps do not lose their stinger and can sting numerous times
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Killer Bees Are dangerous to bee keepers, these african bees have a mean disposition
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Hymenoptera (bees, wasps, ants)
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Spot ID Chewing mouthparts
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Hymenoptera (bees, wasps, ants) Spot ID Chewing mouthparts Four membranous wings
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Hymenoptera (bees, wasps, ants) Spot ID Chewing mouthparts Four membranous wings Waist often constricted
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Hymenoptera (bees, wasps, ants) Spot ID Chewing mouthparts Four membranous wings Waist often constricted Females with ovipositor or stinger at end of abdomen
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Odonata (dragonflies, damselflies) Greek “odon” = tooth (referring to teeth on their mandibles)
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Odonata (dragonflies, damselflies)
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Spot ID Long slender wings
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Odonata (dragonflies, damselflies) Spot ID Long slender wings Long thin body
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Orthoptera (grasshoppers, crickets) Greek “orthos” = straight, “pteros” = wing
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Orthoptera (grasshoppers, crickets)
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Spot ID Jumping hind legs
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Orthoptera (grasshoppers, crickets) Spot ID Jumping hind legs Some with ovipositor at hind end
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Lepidoptera (butterflies, moths) Greek “lepido”= scale, “ptero”= wing
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Coiling-sucking mouthparts
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Lepidoptera (butterflies, moths) Greek “lepido”= scale, “ptero”= wing Coiling-sucking mouthparts Four wings covered with scales
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Hemiptera (TRUE BUGS) Greek “hemisys” = half, “ptero” = wing Spot ID A beak: piercing-sucking mouthparts
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Hemiptera (TRUE BUGS) Greek “hemisys” = half, “ptero” = wing Spot ID A beak: piercing-sucking mouthparts Forewings covering hindwings –Wing half membrane, half thickened or –Wing all membranous
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HEMIPTERA Suborder Heteroptera (Sometimes True Bugs are classified as Heteropterans) True Bugs The name Heteroptera, derived from the Greek "hetero-" meaning different and "ptera" meaning wings, refers to the fact that the texture of the front wings is different near the base (leathery) than at the apex (membranous).
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HEMIPTERA Suborder Heteroptera
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Homoptera (sometimes refered to as a suborder under Hemipteran) Cicadas, Hoppers, Aphids and Scale Insects Acanaloniid Planthopper - Acanalonia bivittata Leafhopper Coelida olitoria
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Homoptera (sometimes refered to as a suborder under Hemipteran) Annual Cicada - Tibicen canicularis Also commonly called the Dog Day Cicada Red aphids by the hundreds
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Diptera (flies) Latin “di”= two, “ptero”= wing
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Spot ID Two wings
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Diptera (flies) Latin “di”= two, “ptero”= wing Spot ID Two wings –Hind wings reduced to halteres
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Diptera (flies) Latin “di”= two, “ptero”= wing Spot ID Two wings –Hind wings reduced to halteres Sponging-sucking mouthparts –Except mosquitoes and some others that pierce skin
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Insects and other Arthropods
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