OUTLINE CLASSIFICATION OF INSECTS 



Class INSECTA or HBXAPODA. 



Sub-class A, APTERYGOTA. 

 Order 1. Thysanura (Bristle- tails). 

 2. Collembola (Spring-tails). 



Sub-class B, EXOPTERYGOTA. 

 Order 1. Dermaptera (Earwigs). 



2. Orthoptera (Cockroaches, Grasshoppers, Crickets). 



3. Plecoptera (Stone-flies). 



4. Isoptera (Termites or * White Ants '). 



5. Corrodent ia 



(a) Copeognatha (Book-lice). 



(b) Mallophaga (Biting-lice). 



6. Ep/iemeroptera (May-flies). 



7. Odonata (Dragon-flies). 



8. Thysanoptera (Thrips). 



9. Hemiptera 



(a) Heteroptera (Bugs, Pond-skaters) 



(b) Homoptera (Cicads, 'Greenfly,' Scales). 

 10. Anoplura (Lice). 



Sub-class C, ENDOPTERYGOTA. 



Order 1. Neuroptera (Alder-flies, Ant-lions, Lacewings). 



2. Coleoptera (Beetles). 



3. Mecaptera (Scorpion-flies). 



4. Trichoptera (Caddis-flies). 



5. Lepidoptera (Moths and Butterflies). 



6. Diptera (Two-ringed flies) 



(a) Orthorrhapha (Crane-flies, Midges, Gnats) 

 (6) Cyclorrhapha (Mover-flies, House-flies, Bot- 

 flies, &c.). 



7. Siphonaptera (Fleas). 



8. Hymenoptera 



(a) Symphyta (Saw-flies) 



(b) Apocrita (Gall-flies, Ichneumon-flies, \V : isps, 



Bees, Ants). 



