Arachnida
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Translingual[edit]
Etymology[edit]
From Ancient Greek ἀράχνη (arákhnē).
Proper noun[edit]
Arachnida
- A taxonomic class within the phylum Arthropoda – spiders, scorpions, harvestmen, mites and ticks, having four pairs of thoracic appendages.
Usage notes[edit]
Consensus is lacking for taxonomic classification between the class and order levels. The subclass Acari is sometimes used, but doing so leads to an incompletely specified level.
Hypernyms[edit]
- (class): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Protostomia – infrakingdom; Ecdysozoa – superphylum; Arthropoda – phylum; Chelicerata - subphylum
Hyponyms[edit]
- (class): Acari (subclass, no consensus on use)
- Holothyrida, Ixodida, Mesostigmata, Opilioacarida, Sarcoptiformes, Trombidiformes (orders, within Acari when used)
- Amblypygi, Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Ricinulei, Schizomida, Scorpiones, Solifugae, Thelyphonida, Uropygi (= Thelyphonida) (orders)
- †Haptopoda, †Phalangiotarbida, †Trigonotarbida, †Uraraneida (extinct orders)
Descendants[edit]
References[edit]
- Arachnida on Wikipedia.Wikipedia
- Arachnida on Wikispecies.Wikispecies
- Category:Arachnida on Wikimedia Commons.Wikimedia Commons
- Arachnida at the Tree of Life Web Project
- Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248. PMID 25923521, doi: 10.1371/journal.pone.0119248