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 3 pairs of legs
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. Mouthparts: Chewing mandibles mandibles
Just a quick overview of what we mean by mouthparts

9. Mouthparts: Sucking Coiled Piercing Sponging-sucking
Just a quick overview of what we mean by mouthparts
Sponging-sucking

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

11. Odonata (dragonflies, damselflies)
Orthodontist – person who straightens teeth.

12. Odonata (dragonflies, damselflies)
Spot ID
Long slender wings
Orthodontist – person who straightens teeth.

13. Odonata (dragonflies, damselflies)
Spot ID
Long slender wings
Long thin body
Orthodontist – person who straightens teeth.

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
Orthodontist – person who straightens teeth.

20. Orthoptera (grasshoppers, crickets)
Orthodontist – person who straightens teeth.

21. Orthoptera (grasshoppers, crickets)
Spot ID
Jumping hind legs
Orthodontist – person who straightens teeth.

22. Orthoptera (grasshoppers, crickets)
Spot ID
Jumping hind legs
Some with ovipositor at hind end
Orthodontist – person who straightens teeth.

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”=wing or Hymen, the Greek god of marriage because the forewing & hindwings are joined together with small hooks
Hooks not shown

39. Hymenoptera (bees, wasps, ants)
Because they are joined together and the hindwings are often small, it can be difficult to tell whether there are four wings.

40. Hymenoptera (bees, wasps, ants)
Spot ID
Chewing mouthparts
Because they are joined together and the hindwings are often small, it can be difficult to tell whether there are four wings.

41. Hymenoptera (bees, wasps, ants)
Spot ID
Chewing mouthparts
Four membranous wings
Because they are joined together and the hindwings are often small, it can be difficult to tell whether there are four wings.

42. Hymenoptera (bees, wasps, ants)
Spot ID
Chewing mouthparts
Four membranous wings
Waist often constricted
Because they are joined together and the hindwings are often small, it can be difficult to tell whether there are four wings.

43. Hymenoptera (bees, wasps, ants)
Spot ID
Chewing mouthparts
Four membranous wings
Waist often constricted
Females with ovipositor or stinger at end of abdomen
Because they are joined together and the hindwings are often small, it can be difficult to tell whether there are four wings.

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