1. ORTHOPTERA (grasshoppers, crickets, katydids)

2. Orthoptera Number of Species Common names Distinguishing characteristics Other features Typical habitats Hexapod Orders 23,000 Grasshoppers, locusts, crickets, katydids Ortho - straight, ptera - wing - vegetation, worldwide -ovipositor -saltatorial hind legs -first group to use sound in communication

3. Orthopteran Phylogeny

4. Fossil Crickets & grasshoppers

5. Characteristics of Orthoptera 1. Chewing Mouthparts

6. Characteristics of Orthoptera 2. Saltatorial Hind Legs

7. Two Suborders of Orthoptera 1. Caelifera - Grasshoppers -diurnal, jumping - short antennae - terrestrial (not arboreal) - nocturnal, walking - long antennae - arboreal 2. Ensifera - katydids, crickets

8. Sound Production Ensifera

9. Sound production - stridulation

13. Sound production - habitat modification

14. Sound Reception Ensifera

15. Ensifera - hearing

17. Sound Production Caelifera

18. Sound Reception Caelifera

19. Sound Reception

20. Orthoptera - Camouflage Caelifera

21. Ensifera - Camouflage/Mimicry

22. Orthoptera - Camouflage Ensifera

23. Ensifera - Nutrients to Female

25. Inject male with radioactive protein Spermatophore takes up radioactive protein Spermatophore passed to female Eggs contain radioactive protein Does the female get the nutrients?

26. Ensifera - Nutrients to Female Amount of spermatophylax eaten Protein in dietFemale size Egg size % surviving Number of eggs Son: length of time as a juvenile Daughter: length of time as a juvenile Son’s size Spermatophylax size Number of eggs Daughter’s size

27. Some representative Orthoptera Ensifera Hagloidea - grigs, Cyphoderris Gryllidae - crickets, mole crickets

28. Some representative Orthoptera Ensifera Stenopalmatidae - Jerusalem cricket & wetas Tettigoniidae - katydids

29. Some representative Orthoptera Caelifera Acrididae - Grasshoppers & locusts

30. Economic Importance Schistocerca gregaria - migratory locust SolitaryDispersing

31. Economic Importance Schistocerca gregaria - migratory locust SolitaryDispersing

32. Economic Importance Schistocerca gregaria - migratory locust

33. Locust outbreaks - Australia

34. Economic Importance