5e:Spider: Difference between revisions
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[[File:Loxosceles reclusa.jpg|thumb|right|180px|Spider<br />by John C. Stennis Space Center, National Aeronautics and Space Administration (NASA)<br />via Mediawiki Commons<br />Public Domain<br />''Image is not part of the SRD'']] | |||
{{5e Monster Short|Spider|Spider|Overview|Beast, Spider | |||
|habitat=Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground, Urban}} | |||
{{refstart}}'''Spiders''' ({{wikip|order (biology)|order}} '''Araneae''') are air-breathing {{wikip|arthropod}}s that have eight legs and {{wikip|chelicerae}} with fangs able to inject {{wikip|venom}}. They are the largest order of {{wikip|arachnid}}s… Spiders are found worldwide on every continent except for {{wikip|Antarctica}}, and have become established in nearly every {{wikip|habitat}}… | |||
Their abdomens bear appendages that have been modified into | Anatomically, spiders differ from other arthropods in that the usual body {{wikip|segmentation (biology)|segments}} are fused into two {{wikip|Tagma (biology)|tagmata}}, the {{wikip|cephalothorax}} and {{wikip|abdomen}}, and joined by a small, cylindrical {{wikip|spider anatomy|pedicel}}. Unlike {{wikip|insect}}s, spiders do not have {{wikip|Antenna (biology)|antennae}}. In all except the most primitive group, the {{wikip|Mesothelae}}, spiders have the most centralized nervous systems of all arthropods, as all their {{wikip|ganglion|ganglia}} are fused into one mass in the cephalothorax. Unlike most arthropods, spiders have no {{wikip|extensor}} muscles in their limbs and instead extend them by hydraulic pressure. | ||
Their abdomens bear appendages that have been modified into {{wikip|spinneret}}s that extrude {{wikip|spider silk|silk}} from up to six types of glands. {{wikip|Spider web}}s vary widely in size, shape and the amount of sticky thread used. It now appears that the spiral orb web may be one of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than {{wikip|orb-web spider}}s.{{refend||<ref>[https://en.wikipedia.org/wiki/Spider Wikipedia - Spider] ''(excerpt, accessed 2020-04-03)''. Licensed [[CC-BY-SA]].</ref>}} | |||
==List of Spiders== | ==List of Spiders== | ||
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{{5e Monster List|Spider}} | {{5e Monster List|Spider}} | ||
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Latest revision as of 08:50, 20 February 2024

by John C. Stennis Space Center, National Aeronautics and Space Administration (NASA)
via Mediawiki Commons
Public Domain
Image is not part of the SRD
Spiders (order
Araneae) are air-breathing arthropod
s that have eight legs and chelicerae
with fangs able to inject venom
. They are the largest order of arachnid
s… Spiders are found worldwide on every continent except for Antarctica
, and have become established in nearly every habitat
…
Anatomically, spiders differ from other arthropods in that the usual body segments
are fused into two tagmata
, the cephalothorax
and abdomen
, and joined by a small, cylindrical pedicel
. Unlike insect
s, spiders do not have antennae
. In all except the most primitive group, the Mesothelae
, spiders have the most centralized nervous systems of all arthropods, as all their ganglia
are fused into one mass in the cephalothorax. Unlike most arthropods, spiders have no extensor
muscles in their limbs and instead extend them by hydraulic pressure.
Their abdomens bear appendages that have been modified into spinneret
s that extrude silk
from up to six types of glands. Spider web
s vary widely in size, shape and the amount of sticky thread used. It now appears that the spiral orb web may be one of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than orb-web spider
s.
List of Spiders
7 Spiders