Spiders

Spiders

Any arachnid of the order Araneae, having a body divided into a cephalothorax with eight legs, two poison fangs, and two feelers as well as an unsegmented abdomen with several spinnerets that produce the silk used to make nests, cocoons, or webs for trapping insects.

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alice1

Beijing, China

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Spiders

scutum

Animals; Spiders

A hard, often shiny, sclerotized plate on the abdomen of some spiders.

septum

Animals; Spiders

A partition separating two cavities or parts.

serrated

Animals; Spiders

Saw-toothed.

sexual dimorphism

Animals; Spiders

A difference in form, color, size, etc., between sexes of the same species.

sigillum

Animals; Spiders

An impressed, sclerotized spot, often reddish-brown. Often present on the dorsal surface of the abdomen and marking points of internal muscle attachments.