CLASSIFICATION 423 



Class XII. Pterygogenea (Insecta sensu stricto), ( ) 



Subclass 1. Orthopteroidea ( ) 



Order 1. Grylloblattoidea ( ) 



Order 2. Orthoptera ( ) 



Order 3. Phasmoidea ( ) 



Order 4. Diploglossata ( ) 



Order 5. Dermaptera ( ) 



Order 6. Thysanoptera ( ) 



Subclass 2. Blattaeformia ( ) 



Order 7. Mantoidea ( ' ) 



Order 8. Blattoidea ( ) 



Order 9. Zoraptera ( ) 



Order 10. Isoptera ( ) 



Order 11. Corrodentia ( . ) 



Order 12. Mallophaga ( ) 



Order 13. Siphunculata ( ) 



Subclass 3. Hymenoptera ( ) 



Order 14. Hymenoptera ( ) 



Subclass 4. Coleopteroidea ( . ) 



Order 15. Coleoptera ( ) 



Order 16. Strepsiptera ( ) 



Subclass 5. Embidaria ( ) 



Order 17. Embiidina ( ) 



Subclass 6. Libelluloidea ( ) 



Order 18. Odonata ( ) 



Subclass 7. Ephemeroidea ( ) 



Order 19. Plectoptera ( ) 



Subclass 8. Perloidea ( ) 



Order 20. Plecoptera ( ) 



Subclass 9. Neuropteroidea ( ) 



Order 21. Megaloptera ( ) 



Order 22. Raphidoidea ( ) 



Order 23. Neuroptera ( ) 



Subclass 10. Panorpoidea ( ) 



Order 24. Panorpatae ( ) 



Order 25. Trichoptera ( ) 



Order 26. Lepidoptera ( ) 



