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Common insect orders

Common insect orders. 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. Parts of an insect. Parts of an insect. Abdomen. Head. Thorax. Parts of an insect. Abdomen. Head.

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Common insect orders

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  1. Common insect orders

  2. 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.

  3. Parts of an insect

  4. Parts of an insect Abdomen Head Thorax

  5. Parts of an insect Abdomen Head Thorax 3 pairs of legs

  6. Parts of an insect Abdomen Head Thorax Wings and legs on thorax 3 pairs of legs

  7. Important areas to study to identify common insect orders Abdomen Head Thorax 3 pairs of legs

  8. mandibles Mouthparts: Chewing mandibles

  9. Mouthparts: Sucking Coiled Piercing Sponging-sucking

  10. Greek “odon” = tooth (referring to teeth on their mandibles) Odonata (dragonflies, damselflies)

  11. Odonata (dragonflies, damselflies)

  12. Odonata (dragonflies, damselflies) Spot ID • Long slender wings

  13. Odonata (dragonflies, damselflies) Spot ID • Long slender wings • Long thin body

  14. Blattodea (roaches)Latin “blatta” = cockroach

  15. Blattodea (roaches)

  16. Blattodea (roaches) Spot ID • Flat

  17. Blattodea (roaches) Spot ID • Flat • Spiny legs

  18. Blattodea (roaches) Spot ID • Flat • Spiny legs • Long antennae

  19. Orthoptera (grasshoppers, crickets)Greek “orthos” = straight, “pteros” = wing

  20. Orthoptera (grasshoppers, crickets)

  21. Orthoptera (grasshoppers, crickets) Spot ID • Jumping hind legs

  22. Orthoptera (grasshoppers, crickets) Spot ID • Jumping hind legs • Some with ovipositor at hind end

  23. Dermaptera(earwigs)Greek “derma” = skin, “ptero” = wing

  24. Dermaptera(earwigs)Greek “derma” = skin, “ptero” = wing Spot ID • Long skin-like hindwings folded under very short forewings

  25. Dermaptera(earwigs)Greek “derma” = skin, “ptero” = wing Spot ID • Long skin-like hindwings folded under very short forewings • Pinchers off end of abdomen

  26. Hemiptera(bugs, hoppers, aphids, scales, cicadas)Greek “hemisys” = half, “ptero” = wing

  27. Hemiptera(bugs, hoppers, aphids, scales, cicadas)Greek “hemisys” = half, “ptero” = wing Spot ID • A beak: piercing-sucking mouthparts

  28. Hemiptera(bugs, hoppers, aphids, scales, cicadas)Greek “hemisys” = half, “ptero” = wing Spot ID • A beak: piercing-sucking mouthparts • Forewings covering hindwings • Wing half membrane, half thickened or • Wing all membranous

  29. Coleoptera(beetles)Greek “koleos”= sheath, “ptero”= wing

  30. Coleoptera(beetles)

  31. Coleoptera(beetles) Spot ID • Chewing mouthparts

  32. Coleoptera(beetles) Spot ID • Chewing mouthparts • Forewings (elytra) form hard shell covering hindwings

  33. Diptera(flies)Latin “di”= two, “ptero”= wing

  34. Diptera(flies)Latin “di”= two, “ptero”= wing

  35. Diptera(flies)Latin “di”= two, “ptero”= wing Spot ID • Two wings

  36. Diptera(flies)Latin “di”= two, “ptero”= wing Spot ID • Two wings • Hind wings reduced to halteres

  37. 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

  38. Hymenoptera(bees, wasps, ants)Greek “hymen”=membrane, “ptero”=wingor Hymen, the Greek god of marriage because the forewing & hindwings are joined together with small hooks Hooks not shown

  39. Hymenoptera(bees, wasps, ants)

  40. Hymenoptera(bees, wasps, ants) Spot ID • Chewing mouthparts

  41. Hymenoptera(bees, wasps, ants) Spot ID • Chewing mouthparts • Four membranous wings

  42. Hymenoptera(bees, wasps, ants) Spot ID • Chewing mouthparts • Four membranous wings • Waist often constricted

  43. Hymenoptera(bees, wasps, ants) Spot ID • Chewing mouthparts • Four membranous wings • Waist often constricted • Females with ovipositor or stinger at end of abdomen

  44. Lepidoptera(butterflies, moths)Greek “lepido”= scale, “ptero”= wing

  45. Lepidoptera(butterflies, moths)Greek “lepido”= scale, “ptero”= wing • Coiling-sucking mouthparts

  46. Lepidoptera(butterflies, moths)Greek “lepido”= scale, “ptero”= wing • Coiling-sucking mouthparts • Four wings covered with scales

  47. Insects and other Arthropods

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