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)

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)

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

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)

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

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.
Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.

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[Shear.Edgecombe2010-1] 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.

[Hoffman1963-2] Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.