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The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two tagmata (sections or segments), eight jointed legs, no wings or antennae, the presence of chelicerae and pedipalps , simple eyes , and an exoskeleton , which is periodically shed .
This image comes from the following images: File:Spider_internal_anatomy.png licensed with PD-US . 2009-06-27T01:33:45Z Kaldari 5000x2500 (10823835 Bytes) {{Information |Description={{en|1=Diagram of the internal anatomy of a two-lunged spider.}} |Source=Scanned from the 1920 edition of ''The Spider Book'', published by Doubleday, Page & Company (originally published in 1912)
English: Diagram showing the external anatomy of a pedipalp and leg of a spider. Date: 7 May 2017: Source: This file was derived from: Spider external anatomy.png:
This image is a derivative work of the following images: File:Spider internal anatomy-en.svg licensed CC by SA 3.0; File:Spider_internal_anatomy.png licensed with PD-US . 2009-06-27T01:33:45Z Kaldari 5000x2500 (10823835 Bytes) {{Information |Description={{en|1=Diagram of the internal anatomy of a two-lunged spider.}} |Source=Scanned from the 1920 edition of ''The Spider Book'', published by ...
In addition to preserving spiders' anatomy in very fine detail, pieces of amber show spiders mating, killing prey, producing silk and possibly caring for their young. In a few cases, amber has preserved spiders' egg sacs and webs, occasionally with prey attached; [93] the oldest fossil web found so far is 100 million years old. [94]
In this spider diagram, the position of the book lungs is labelled 1. Spider book lungs (cross section) Internal anatomy of a female spider, book lungs shown in pink A book lung is a type of respiration organ used for atmospheric gas-exchange that is present in many arachnids, such as scorpions and spiders.
Pages in category "Spider anatomy" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. ...
Diagram of palpal bulb components The palpal bulb is expanded and moved during courtship and copulation. In mesothele spiders, such as Liphistius and Heptathela , there are two muscles, originating lower in the pedipalp, that attach by tendons to parts of the bulb and help to move it, the soft haematodochae allowing both movement and expansion.