ANNOTATED LIST OF THE ORDERS OF MYRIAPODA 



Order PAUROPODA 



Minute animals with three-branched antennae 

 Order SYMPHYLA 



Minute animals with unbranched antennae 

 Order DIPLOPODA MilHpedes 



Usually elongate-cylindrical, with two pairs of legs on most segments 

 Order CHILOPODA Centipedes 



Elongate, flattened animals, with one pair of legs on most segments 



ANNOTATED LIST OF THE PRINCIPAL ORDERS 

 OF INSECTA 



Order THYSANURA Bristle-tails and Silver-flsh 



Small, terrestrial, wingless insects; antennae long; with three, hair-like 

 terminal appendages 



Order COLLEMBOLA Spring-tails 



Small, wingless insects; with moderately long antennae; with abdominal 

 leaping appendage 



Order ORTHOPTERA Grasshoppers and Crickets 



Small to large insects; fore wings straight, narrow and stiff (Cock- 

 roaches, Mantes and Walking-sticks are usually included here, but are 

 regarded by some entomologists as forming three separate orders, the 

 Blattariae, the Mantodea, and the Phasmatodea.) 



Order DERMAPTERA Earwigs 



Small to moderate insects; fore wings hardened, hind wings membran- 

 ous, folded under fore wings when at rest; abdomen ending in a pair of 

 prominent forceps 



Order THYSANOPTERA Thrips 



Very small insects; with four narrow wings fringed with long bristles 



Order ISOPTERA Termites 



Colonial, polymorphic insects, somewhat ant-like, but with thorax 

 broadly connected to abdomen 



Order CORRODENTIA Book-lice, Bark-lice 



Small, soft-bodied insects; wings, when present, relatively large 



Order MALLOPHAGA Bird Lice 



Small, wingless, external parasites of birds; body broad and flat; legs 

 short; with biting mouth parts 



Order SIPHUNCULATA (or Anoplura) True Lice 



Small, wingless, external parasites of mammals; body flattened; with 

 sucking mouth parts 



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