List of arthropod orders

Arthropods are invertebrate animals with a chitinous exoskeleton, segmented bodies, and jointed legs. The phylum Arthropoda contains numerous taxonomic orders in over 20 classes.

Wolf spider carrying its young in its egg sac.

Marrella, one of the puzzling arthropods from the Burgess Shale

A shed carapace of a lady crab, part of the hard exoskeleton

Subphylum Hexapoda

Class Insecta (Insects)

Head of a wasp with three ocelli (centre), and compound eyes at the left and right

A pair of Simosyrphus grandicornis hoverflies mating in flight.

Aedes aegypti, a parasite, is the vector of dengue fever and yellow fever

• Order Archaeognatha – 350 (Jumping bristletails)
• Order Zygentoma – 370
• Order †Monura
• Order Odonata – 5,900 (Dragonflies and damselflies)
• Order Ephemeroptera – 3,000 (Mayflies)
• Order Hemiptera – 50,000–80,000 (True bugs)
• Order Psocodea – 11,000 (Lice, bark lice, book lice)
• Order Thysanoptera – 5,000 (Thrips)

Superorder Odonataptera

• • Order †Geroptera
  • Order †Protanisoptera
  • Order †Triadophlebioptera
  • Order †Protozygoptera
  • Order †Meganisoptera
  • Family †Lapeyriidae
  • Family †Campylopteridae
  • Family †Erasipteridae (likely paraphyletic)

Superorder Palaeodictyopteroidea

• • Order †Archodonata
  • Order †Diaphanopterodea
  • Order †Megasecoptera
  • Order †Palaeodictyoptera

Superorder Holometabola

• • Order Coleoptera – 360,000–400,000 (Beetles)
  • Order Diptera – 152,956 (Flies)
  • Order Hymenoptera – 115,000 (Sawflies, wasps, bees, and ants)
  • Order Lepidoptera – 174,250 (Butterflies and moths)
  • Order †Protodiptera (Permotipula and Permila)
  • Order Mecoptera – 481 (Scorpionflies)
  • Order †Miomoptera
  • Order Megaloptera – 250–300 (Alderflies, dobsonflies, and fishflies)
  • Order Neuroptera – 5,000 (Net-winged insects)
  • Order Raphidioptera – 210 (Snakeflies)
  • Order Siphonaptera – 2,525 (Fleas)
  • Order Strepsiptera – 596 (Twisted-wing parasites)
  • Order Trichoptera – 12,627 (Caddisfly)
  • Order †Tarachoptera

(Unranked) Polyneoptera

• • Order Dermaptera – 1,816 (Earwigs)
  • Order †Protelytroptera
  • Order †Caloneurodea
  • Order Embioptera – 200–300 (Webspinners)
  • Order †Protorthoptera (Paraphyletic assemblage of basal and stem polyneopterans)
  • Order †Blattoptera (Paraphyletic assemblage of basal and stem cockroaches)
  • Order Mantodea – 2,200 (Mantises)
  • Order †Alienoptera
  • Order Notoptera – 30 (Includes icebugs)
  • Order Orthoptera – 24,380 (Grasshoppers, locusts, crickets, etc.)
  • Order †Titanoptera
  • Order Phasmatodea – 2,500–3,300 (Stick insects or stick-bugs)
  • Order Plecoptera – 2,274 (Stoneflies)
  • Order Zoraptera – 28 (Angel insects)
  • Order Blattodea – 3,684–4,000 (Cockroaches and termites)

Incertae sedis

• • Order †Glosselytrodea
  • Order †Coxoplectoptera

Class Entognatha

Proturan specimen (Acerentomon sp.)

• Order Collembola (Springtails)
• Order Diplura (Diplurans)
• Order Protura (Coneheads)

Subphylum Chelicerata

Clade Prosomapoda

• Order Xiphosura

Clade Sclerophorata

• Order †Eurypterida
• Order †Chasmataspidida

Class Arachnida (Arachnids)

Araneus diadematus spider

• Subclass Acari
  • Order Opilioacariformes
  • Order Ixodida (Ticks)
  • Order Holothyrida
  • Order Mesostigmata
  • Order Trombidiformes
  • Order Oribatida (Beetle mites)
  • Order Endeostigmata
  • Unranked clade Astigmatina
• Order Amblypygi (Whip spiders)
• Order Araneae (Spiders)
• Order †Haptopoda (Plesiosiro madeleyi)
• Order Opiliones (Harvestmen, also known as daddy longlegs)
• Order Palpigradi (Microwhip scorpions)
• Order †Uraraneida
• Order †Phalangiotarbida
• Order Pseudoscorpionida (Pseudoscorpions, or false scorpions)
• Order Ricinulei (Hooded tickspiders)
• Order Schizomida (Shorttailed whipscorpions)
• Order Scorpiones (True scorpions)
• Order Solifugae (Sun spiders or wind scorpions)
• Order Thelyphonida (Whip scorpions)
• Order †Trigonotarbida

Class Pycnogonida (Sea spiders)

Pycnogonida

• Order Pantopoda

Class Yunnanata †

• Order Fuxianhuiida (Fuxianhuia protensa)

Subphylum Myriapoda (Centipedes and millipedes)

A representative millipede and centipede (not necessarily to scale)

Ammodesmus nimba from Guinea, West Africa, curled in a defensive coil

Class Chilopoda (Centipedes)

• Order Scutigeromorpha
• Order Lithobiomorpha (stone centipedes)
• Order Craterostigmomorpha
• Order Scolopendromorpha (tropical centipedes)
• Order Geophilomorpha (soil centipedes)
• Order †Devonobiomorpha

Class Diplopoda (Millipedes)

See also: List of millipede families

Subclass Penicillata

• • Order Polyxenida (Bristly millipedes)

Subclass †Arthropleuridea

• • Order †Arthropleurida
  • Order †Eoarthropleurida
  • Order †Microdecemplicida (Microdecemplex rolfei)

Subclass Chilognatha

• • Order †Zosterogrammida [1]
• Infraclass Pentazonia
  • Order †Amynilyspedida
  • Superorder Limacomorpha
    • Order Glomeridesmida
  • Superorder Oniscomorpha (Pill millipedes)
    • Order Glomerida
    • Order Sphaerotheriida (Giant pill millipedes)
• Superorder †Archipolypoda
  • Order †Archidesmida
  • Order †Cowiedesmida
  • Order †Euphoberiida
  • Order †Palaeosomatida
• Order †Pleurojulida
• Order Platydesmida
• Order Polyzoniida
• Order Siphonocryptida
• Order Siphonophorida
• Superorder Juliformia
  • Order Julida
  • Order Spirobolida
  • Order Spirostreptida
  • Superfamily †Xyloiuloidea (Sometimes aligned with Spirobolida)[2]
• Superorder Nematophora
  • Order Callipodida
  • Order Chordeumatida
  • Order Stemmiulida
  • Order Siphoniulida
  • Order Polydesmida (Flat-backed millipedes)

Class Pauropoda

A pauropod

• Order Pauropodina

Class Symphyla: no order (garden centipedes)

• Family Scutigerellidae
• Family Scolopendrellidae

Subphylum Crustacea (Crustaceans)

Class Thylacocephala? †

• Order Concavicarida
• Order Conchyliocarida

Class Branchiopoda

Branchiopods

• Order Anostraca (Fairy shrimp)
• Order †Lipostraca
• Order Notostraca (Tadpole shrimp)
• Subclass Diplostraca (Clam shrimp)
  • Order Cyclestherida
  • Order Cladocera (Water fleas)
  • Order Laevicaudata
  • Order Spinicaudata

Class Remipedia

• Order †Enantiopoda
• Order Nectiopoda

Class Cephalocarida (Horseshoe shrimp)

• Order Brachypoda

Class Maxillopoda

Cyclops (Copepoda: Cyclopoida)

Subclass Thecostraca

• (unranked) Facetotecta
• Infraclass Ascothoracida
  • Order Laurida
  • Order Dendrogastrida
• Infraclass Cirripedia (Barnacles)
  • Order Pygophora
  • Order Apygophora
  • Order Kentrogonida
  • Order Akentrogonida
  • Order Pedunculata (Goose barnacles)
  • Order Sessilia (Acorn barnacles)

Subclass Tantulocarida

• Family Deoterthridae (no order)

Subclass Branchiura

• Order Arguloida (Carp lice, or fish lice)
• Order †Cyclida (Cycloids)

Subclass Pentastomida (Tongue worms)

Adult female Linguatula serrata

• Order Cephalobaenida
• Order Porocephalida
• Order Raillietiellida
• Order Reighardiida

Subclass Mystacocarida

• Order Mystacocaridida

Subclass Copepoda (Copepods)

• Order Calanoida
• Order Cyclopoida
• Order Gelyelloida
• Order Harpacticoida
• Order Misophrioida
• Order Monstrilloida
• Order Mormonilloida
• Order Platycopioida
• Order Poecilostomatoida
• Order Siphonostomatoida

Class Ostracoda (Ostracods, or seed shrimp)

Ostracod

Subclass Myodocopa

• Order Myodocopida
• Order Halocyprida

Subclass Podocopa

• Order Platycopida
• Order Podocopida

Class Malacostraca (Malcostracans, such as crabs and lobsters)

Syncarid Atlantic blue crab Callinectes sapidus

Hoplocarid

Nebalia bipes Phyllocarid

See also: List of prehistoric malacostracans

Subclass Eumalacostraca

• Superorder Syncarida
  • Order Anaspidacea Calman, 1904
  • Order Bathynellacea Chappuis, 1915
  • Order Palaeocaridacea
• Superorder Peracarida
  • Order Amphipoda (Includes freshwater shrimp and sandhoppers)
  • Order Cumacea (Hooded shrimp)
  • Order Isopoda (Isopods - includes wood lice)
  • Order Lophogastrida
  • Order Mictacea
  • Order †Pygocephalomorpha
  • Order Spelaeogriphacea
  • Order Stygiomysida
  • Order Tanaidacea (Tanaids)
  • Order Thermosbaenacea
• Superorder Eucarida
  • Order Amphionidacea (Amphionides reynaudii)
  • Order Decapoda (Crayfish, crabs, lobsters, prawns, and shrimp)
  • Order Euphausiacea (Krill)
  • Order †Angustidontida

Subclass Hoplocarida

• • Order Stomatopoda (Mantis shrimp)
  • Order †Aeschronectida
  • Order †Palaeostomatopoda

Subclass Phyllocarida

• • Order Leptostraca
  • Order †Hymenostraca (Hymenocaris vermicauda)
  • Order †Archaeostraca

Subphylum Trilobitomorpha †

Class Trilobita † (Trilobites)

See also: List of trilobite genera

Paradoxides

• Order Agnostida †
• Order Asaphida †
• Order Corynexochida †
• Order Harpetida †
• Order Nectaspida †
• Order Redlichiida †
• Order Lichida †
• Order Phacopida †
• Order Proetida †
• Order Ptychopariida †

Other classes

Class Megacheira †

Reconstructed Leanchoilia

• Order Leanchoilia †
• Order Pectocaridida †

Order Strabopida (no class) †

• Strabops
• Parapaleomerus
• Paleomerus
• Khankaspis

Class Merostomoidea †

• Order Limulavida †
• Order Emeraldellida †

Class Marrellomorph †

• Order Marrellida †

Class Cheloniellida (no orders) †

• Genus Cheloniellon
• Genus Duslia
• Genus Neostrabops
• Genus Paraduslia
• Genus Pseudarthron
• Genus Triopus

Family Isoxidae † (no order or class)

• Genus Isoxys

Class Dinocaridida †

• Order Radiodonta †
• Order Anomalocarididae †
• Order Opabiniidae †

Subclass Euthycarcinoidea †

• Order Euthycarcinida

Order Phosphatocopida †

• (unranked) Hesslandonina
• (unranked) Vestrogothiina

References

1. Shear, William A.; Edgecombe, Gregory D. (2010). "The geological record and phylogeny of the Myriapoda". Arthropod Structure & Development. 39 (2–3): 174–190. doi:10.1016/j.asd.2009.11.002. PMID 19944188.
2. Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.