INSECT ORDERS

Ephemeroptera: Mayfly
One pair of wings. Conspicuous filaments at the end of the abdomen, wings held vertically above the body when at rest 
  
Orthoptera: Cockroach, Grasshoppers, crickets
They are characterized by leathery forewings, chewing mouthparts, and a gradual metamorphosis. Usually the hindlegs are enlarged and adapted for jumping. 
  
Hemiptera (Heteroptera): Bedbugs, Boxelder Bug, Squash Bugs, Stink Bugs
Order of insects containing the bugs. 
  
Homoptera: Aphids, Cicadas, Preying Mantis
They are characterized by uniformly leathery or uniformly membranous forewings, sucking mouthparts, and an incomplete metamorphosis. 
  
Diptera: Black Fly, Flies, Gnats, House Fly, Mosquitos
They are characterized by a single pair of membranous wings, a pair of halters (instead of the hind wings), sucking mouthparts, and a complete metamorphosis.
  
Lepidoptera: Butterflies, Moths
They are characterized by scale-covered wings, coiled siphoning mouthparts, and a complete metamorphosis.
  
Coleoptera: Beetles, Fireflies, Japanese Beetle, Ladybugs
Beetles are characterized by hard front wings that meet in a straight line in the middle of the back, chewing mouthparts, and a complete metamorphosis. 
  
Hymenoptera: Ants, Carpenter Bee, Honey bee, Hornets, Mud Daubers, Saw Flies, Wasps, Yellow jackets 
They are characterized by membranous wings, chewing or chewing-lapping mouthparts, and a complete metamorphosis. 
  
Dermaptera: Earwig
They are characterized by short, hardened wing covers, chewing mouthparts, pincerlike abdominal cerci, and an incomplete metamorphosis. 
  
Trichoptera: Caddisfly
They are characterized by hairy, mothlike wings, long hairlike antennae, nonfunctional mouthparts, and a complete metamorphosis. 
  
Thysanoptera: Thrips
They are characterized by fringed wings, rasping mouthparts, and an incomplete metamorphosis. 
  
Mecoptera: Scorpionfly
They are characterized by membranous wings, elongate faces with chewing mouthparts, a scorpion-shaped abdomen (male only), and a complete metamorphosis.

   
Odonta: Damselflies, Dragonfly, 
They are characterized by membranous wings, bristlelike antennae, long, slender bodies, chewing mouthparts, and an incomplete metamorphosis.

Plecoptera: Stonefly
They are characterized by membranous wings, chewing mouthparts, two short abdominal cerci, and an incomplete metamorphosis.

Neuroptera: Alderfly, Antlions, Dobsonfly, Fishfly, Lacewings, Owlfly, Snakefly, 
They are characterized by membranous wings, chewing mouthparts, and a complete metamorphosis.

Isoptera: Termites
They are characterized by membranous wings (or wingless), beadlike antennae, chewing mouthparts, and an incomplete metamorphosis.

Psocoptera: Bark Lice, Book Lice
They are characterized by flattened bodies, membranous wings (or wingless), chewing mouthparts, and an incomplete metamorphosis.

Mallophaga: Chewing Lice
They are characterized by flattened, wingless bodies, chewing mouthparts, and an incomplete metamorphosis.

Anoplura: Sucking Lice
They are external parasites that feed by sucking blood. They have a flattened, wingless body, sucking mouthparts, and an incomplete metamorphosis.

Siphonaptera: Fleas
They are small insects, characterized by wingless, sideways flattened bodies, jumping legs, sucking mouthparts, and a complete metamorphosis.

Thysanura: Silverfish
   
Collembolla: Springtails
They are characterized by wingless bodies with a spring mechanism, chewing mouthparts, and no metamorphosis.