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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Beijing, China

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Spiders

folium

Animals; Spiders

Any pattern of pigment on the dorsum of the abdomen which is fairly broad and leaf-shaped.

fovea

Animals; Spiders

A short median groove on the thoracic part of the carapace which marks the internal attachment of the gastric muscles.

genitalia

Animals; Spiders

All the genital structures.

gossamer

Animals; Spiders

A light film of silk threads, or groups of these floating through the air.

hackled band

Animals; Spiders

The composite threads of the cribellate spiders, spun by cribellum and combed by the calamistrum.

haematodocha

Animals; Spiders

A balloon of elastic connective tissue between groups of seletites in the male palp which distends with blood during insemination causing the selerites to separate and rotate.