120 BRITISH INSECTS 



OUTLINE CLASSIFICATION OF BRITISH 

 INSECTS 



Class : Hexapoda (or Insecta). 



Sub-class : Apterygota (wingless insects). 

 Order i. Aptera. 



Sub-order : (a) Thysanura (Bristle-tails). 



Sub-order : (b) Collembola (Spring-tails). 



Sub-class : Exopterygota (wings developed visibly outside the 



cuticle). 



Order 2. Dermaptera (Earwigs). 



Order 3. Orthoptera (Cockroaches, grasshoppers, crickets, etc.). 

 Order 4. Plecoptera (Stone-flies). 

 Order 5. Corrodentia. 



Sub-order : (a) Copeognatha (Book-lice, etc.). 



Sub-order : (b) Mallophaga i Biting lice). 

 Order 6. Ephemeroptera (May-flies). 

 Order 7. Odonata (Dragon-flies). 

 Order 8. Thysanoptera (Thrips, or flower-insects). 

 Order 9. Hemiptera. 



Sub-order: (a) Heteroptera (Bugs). 



Sub-order : (b) Homoptera (Frog-hoppers, aphides, scales, 



etc.). 

 Order 10. Anoplura (Lice). 



Sub-class : Endopterygota (wings developed beneath the 



larval cuticle, only visible after penultimate moult). 

 Order n. Neuroptera (Alder-flies, lacewings, etc.). 

 Order 12. Coleoptera (Beetles). 

 Order 13. Mecaptera (Scorpion-flies). 

 Order 14. Trichoptera (Caddis-flies). 

 Order 15. Lepidoptera (Butterflies and moths). 

 Order 16. Diptera. 



Sub-order : (a) Orthorrhapha (Midges, gnats, crane-flies, 



etcj. 



Sub-order : (b) Cyclorrhapha (Hover-flies, house-flies, bot- 

 flies, etc.). 



Order 17. Siphonaptera (Fleas). 

 Order 18. Hymenoptera. 



Sub-order : (a) Symphyta (Saw-flies). 



Sub-order : (b) Apocrita (Gall-wasps, ichneumons, wasps, 

 ants, bees, etc.). 



