262 INSECT ORDERS 



Classification and Derivation of Scientific Words 



Class Insecta (L. insectus, divided; refers to the divided body, body di- 

 vided into three parts). 

 Order 1. Thysanura (Gr. thysanos, tassel; oura, tail; refers to tail). 

 Order 2. Collembola (Gr. kolla, glue; ballo, part). 

 Order 3. Ephemerida (Gr. ephemeros, lasting but a day; the adults 



live but a day). 

 Order 4. Odonata (Gr. odous, tooth; refers to the toothlike biting 



mouth parts). 

 Order 5. Plecoptera (Gr. plecos, plaited; pteron, wing; the wings are 



folded in plaits when not flying). 

 Order 6. Orthoptera (Gr. orthos, straight; pteron, wing; front wings 



held straight back over the body). 

 Order 7. Isoptera (Gr. isos, equal; pteron, wing; the four wings are 



of equal size). 

 Order 8. Dermaptera (Gr. derma, skin; pteron, wing; the hind wings 



resemble skin). 

 Order 9. Coleoptera (Gr. celos, sheath; pteron, wing; the front wings 



act as a sheath for the hind pair). 

 Order 10. Mallophaga (Gr. mallos, wool; phagein, eat; feed on feath- 

 ers, hair, and skin). 

 Order 11. Anoplura (Gr. an, without; oplon, sting; oura, tail; they 



do not have a sting on the "tail"). 

 Order 12. Hemiptera (Gr. hemi, half; pteron, wing; the front wings 



are half leather-like and half membranous). 

 Order 13. Homoptera (Gr. homos, same; pteron, wing; wings are of 



the same thickness throughout their length and width). 

 Order 14. Neuroptera (Gr. neuron, nerve; pteron, wing; the wings 



are filled with a delicate network of "nerves"). 

 Order 15. Lepidoptera (Gr. lepis, scale; pteron, wing; the wings are 



covered with fine scales). 

 Order 16. Diptera (Gr. dis, two; pteron, wing; there are only two 



fully developed wings). 

 Order 17. Siphonaptera (Gr. siphon, a tube; a, without; pteron, wing; 



wingless insects that suck the food through a tube or proboscis). 

 Order 18. Hymenoptera (Gr. hymen, a membrane; pteron, wing; 



have thin membranous wings). 



REVIEW QUESTIONS 



1. List the orders of insects with complete, incomplete, and gradual meta- 

 morphosis and those with no metamorhposis. 



