Dichotomous Key/Arthropoda

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Dichotomous Key: Arthropoda Kingdom: Animalia Phylum: Arthropoda Information related to Arthropoda Wikipedia Wikispecies Wikicommons

Parent key: Animalia Phyla Arthropoda Key: Arthropoda Arthropoda {{{6}}}

[edit] 1

• Number of antennae
  • Two pairs - Crustacea
  • One pair or none - #2

Animalia keys
Subkingdom
Agnotozoa
Phyla
Acoelomorpha | Cnidaria | Ctenophora | Myxozoa | Orthonectida | Placozoa | Porifera | Rhombozoa
Superphylum:Deuterostomia
Chaetognatha | Chordata | Echinodermata | Hemichordata
Superphylum:Ecdysozoa
Arthropoda | Kinorhyncha | Loricifera | Nematoda | Nematomorpha | Onychophora | Priapulida | Tardigrada
Superphylum:Lophotrochozoa
Annelida | Brachiopoda | Ectoprocta | Entoprocta | Mollusca | Nemertea | Phoronida | Sipuncula
Superphylum:Platyzoa
Acanthocephala | Cycliophora | Gastrotricha | Gnathostomulida | Micrognathozoa | Platyhelminthes | Rotifera

[edit] 2

• Number of legs
  • Three pairs - Hexapoda
  • Four or more pairs - 3

[edit] 3: Antennae

• Antennae
  • Present - Myriapoda
  • Not present - 4

[edit] 4: Body segments

• Number of body segments in adult
  • Two - Arachnida
  • Other than two - 5

[edit] 5: Pedipalps

• Pedipalps modified to pincers
  • Present - 6
  • Not present - 7

[edit] 6: Stinger

• Stinger at tip of tail
  • Present - Scorpionida
  • Not present - Pseudoscorpionida

[edit] 7: Legs

• Leg size
  • Very small - Acari
  • Very large - Opiliones