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Arachnid locomotion is the various means by which arachnids walk, run, or jump; they make use of more than muscle contraction, employing additional methods like hydraulic compression. [ 1 ] [ 2 ] Another adaptation seen especially in larger arachnid variants is inclusion of elastic connective tissues .
Inside the abdomen we see the left ovary with spherical eggs which emerge from an opening between the spiracles. 2 Cephalothorax opened - m- muscles for the legs. g - two poison glands. b - sucking stomach. there are two sacs - c with protrusions d. k are feelers. 3 is a close up of a spinneret. The abdomen is also known as the opisthosoma.
Spider behavior refers to the range of behaviors and activities performed by spiders. Spiders are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom . They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms [ 1 ] which is reflected in their ...
The only extensor muscles in spider legs are located in the three hip joints (bordering the coxa and the trochanter). [38] As a result, a spider with a punctured cephalothorax cannot extend its legs, and the legs of dead spiders curl up. [ 13 ]
Spider chelicerae. The chelicerae are shown in black, the surface of the cephalothorax in brown, the legs in reddish brown, and the venom glands and surrounding muscle tissue in green. The fang portion of the right chelicera can be seen projecting into the space between the two chelicerae.
Cebrennus rechenbergi, also known as the Moroccan flic-flac spider and cartwheeling spider, [1] is a species of huntsman spider indigenous to the sand dunes of the Erg Chebbi desert in Morocco. If provoked or threatened it can escape by doubling its normal walking speed using forward or backward flips similar to acrobatic flic-flac movements ...
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The cymbium is a spoon-shaped structure located at the end of the spider pedipalp that supports the palpal organ. [3] The cymbium may also be used as a stridulatory organ in spider courtship. [6] The embolus is a narrow whip-like or leaf-like extension of the palpal bulb.