Knowra Spinneret Spinneret A spider’s silk-extruding appendage, usually located at the rear of the abdomen. Its movable outlets draw silk from internal glands and help control strand placement.
Spider silk : Protein-based fiber produced by spiders for webs, egg cases, prey capture, and other functions. Spinnerets extrude and position this fiber.
Spider : An eight-legged arachnid with a body divided into two main regions. Spinnerets are specialized appendages found on spiders.
Orb-web : A roughly circular, two-dimensional spider web built from radiating and spiral threads. Spinnerets place structural, capture, and attachment silks during construction.
Silk-spinning organ (insects) : An insect structure that produces or extrudes silk, such as a larval labial gland outlet. Insects can spin silk without the spider’s abdominal spinneret arrangement.
Spider silk gland : An abdominal organ that produces a particular type of spider silk. Silk reaches the spinnerets from these glands through ducts.
Opisthosoma : The posterior body region of a spider, containing most internal organs and the spinnerets. The spinnerets are typically attached to its rear underside.
Dragline silk : Strong spider silk used for safety lines, web frameworks, and suspension. Spinnerets release dragline silk as spiders move or build structures.
Cribellum : A specialized silk-producing plate present in some spiders, positioned near the spinnerets. It adds fine silk fibers but is distinct from the spinnerets themselves.
Spigot (arachnology) : A minute outlet on a spider’s spinneret through which silk is extruded. Spigots are the terminal openings that release silk onto a surface or strand.
Arachnid : A chelicerate arthropod, including spiders, scorpions, mites, and ticks. Spiders belong to this broader group, though spinnerets distinguish spider anatomy.
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