Classification of Arthropods/Insects           Entomology – Biology 4900
                Dr. Adams
    Phylum Arthropoda -- Arthropods
        Subphylum Trilobita -- Trilobites (extinct)
        Subphylum Chelicerata -- Chelicerates
            Class Merostomata -- Horseshoe Crabs
            Class Arachnida -- Spiders, Scorpions, Ticks, Chiggers, Mites
            Class Pycnogonida -- Sea Spiders
        Subphylum Myriapoda 
            Class Diplopoda -- Millepedes
            Class Chilopoda -- Centipedes
            Class Pauropoda -- Pauropods
            Class Symphyla -- symphylans
        Subphylum "Crustacea" -- Crustaceans (Crabs, Shrimp, Barnacles, Isopods [pillbugs], etc.)
            Many different Classes (and not monophyletic; shares a common ancestor with the hexapods)
        Subphylum Hexapoda -- Hexapods
            Informal group "Entognatha"
                Class/Order Protura -- Proturans              
                Class/Order Collembola -- Springtails  
                Class/Order Diplura -- Diplurans; more closely related to insects than the other two           
            Class Insecta                                                       
                Subclass Apterygota -- NO wings
                          Order Archaeognatha -- Jumping Bristletails (machilids)
                          Order Thysanura -- Silverfish
                Subclass Pterygota -- wings
                    Infraclass Paleoptera
                          Order Ephemeroptera -- Mayflies  
                          Order Odonata -- Dragonflies and Damselflies
                                Suborder Zygoptera -- Damselflies
                                Suborder Anisoptera -- Dragonflies
                    Infraclass Neoptera
                        Division -- Exopterygota
                            Superorder Polyneoptera (Orthopteroidea)
                                    Blattodea (including Isoptera) -- Roaches and Termites
                                    Mantodea -- Mantids
                                    Grylloblattodea -- Rock hoppers
                                    Mantophasmatodea -- Heelwalkers or Gladiators
                                    Dermaptera -- Earwigs
                                    Plecoptera -- Stoneflies
                                    Orthoptera -- Grasshoppers, Crickets, Katydids
                                        Suborder Caelifera
                                        Suborder Ensifera
                                    Embiidina -- Webspinners
                                    Phasmatodea -- Stick insects
                                    Zoraptera -- Zorapterans

 
                            Superorder Paraneoptera (Hemipteroidea)
                                    Psocodea now considered by most to contain the two following:
                                            Psocoptera -- Book Lice, bark lice, psocids
                                            Phthiraptera -- Lice
                                                (Anoplura, Amblycera and Ischnocera)
                                    Hemiptera:
                                        Suborder Heteroptera -- True Bugs (Stink bugs, etc.)
                                        Suborder Auchenorrhyncha -- Cicadas, Leaf Hoppers, etc.
                                        Suborder Sternorrhyncha -- Aphids, etc.
                                    Thysanoptera -- Thrips (Tubulifera and others)
                        Division Endopterygota
                            Neuropteroid Orders                                       
                                    Megaloptera -- Dobsonflies, Alderflies, Fishflies
                                    Raphidioptera -- Snakeflies
                                    Neuroptera -- Lacewings, Antlions, etc.
                                    Coleoptera -- Beetles
                                        Suborder Adephaga
                                        Suborder Polyphaga
                                    Strepsiptera -- Twisted-winged Parasites
                            Hymenopteroid Order
                                    Hymenoptera -- Ants, Wasps, and Bees
                            Mecopteroid Orders
                                    Mecoptera -- Scorpionflies
                                    Diptera -- Flies  
                                        Suborder Nematocera
                                        Suborder Brachycera
                                    Siphonaptera -- Fleas
                                    Lepidoptera -- Butterflies and Moths
                                        Suborder Monotrysia
                                        Suborder Ditrysia
                                    Trichoptera -- Caddisflies

The hexapod orders in bold print are the required orders (or sets of orders) for your collection.
The orders/classes/subphyla in bold listed prior to the hexapods are those that you are going to
    encounter in the terrestrial environment as you search for your insects.