蜘蛛綱
閱讀設定
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![]() "Arachnida" from Ernst Haeckel's Kunstformen der Natur, 1904
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物種分類 | ||||||||
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蟎目 Acarina |
蜘蛛綱 (Arachnid) 又叫蛛形綱,節肢動物門中嘅其中一綱。大約有 65,000-73,000 個物種,包括咗蜘蛛、蠍子、牛痺、蟎等等。
蜘蛛綱同昆蟲係好易分-蜘蛛綱嘅物種有 8 隻(或 4 對)腳,昆蟲淨係得嗰 6 隻(3 對)。
蜘蛛綱嘅品種大部份食肉,有啲蜘蛛綱嘅物種係有毒,有啲對人畜有害。
分類
[編輯]- Trigonotarbida - extinct
- Amblypygi - "blunt rump" tailless whip scorpions with front legs modified into whip-like sensory structures as long as 25 cm or more
- Araneae - spiders (40,000 species)
- Mesothelae - very rare, basal spiders, with abdomen segmented and spinnerets median
- Opisthothelae - spiders with abdomen unsegmented and spinnerets located posteriorly
- Araneomorphae - most common spiders
- Mygalomorphae - tarantulas and tarantula-like spiders
- Phalangiotarbida - extinct
- Opiliones - phalangids, harvestmen or daddy-long-legs (6,300 species)
- Palpigradi - microwhip scorpions
- Pseudoscorpionida - pseudoscorpions
- Ricinulei - ricinuleids, hooded tickspiders
- Schizomida - "split middle" whip scorpions with divided exoskeletons
- Scorpiones - scorpions (2,000 species)
- Solifugae - solpugids, windscorpions, sun spiders or camel spiders (900 species)
- Haptopoda - extinct
- Uropygi - whip scorpions, with first legs modified as whip-like sensory organs and with a long thin tail at end of abdomen (100 species)
- Acarina - mites and ticks (30,000 species)
蜘蛛綱大約有 110,000 品種,可能有好多未有人發現嘅。
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