Biology

Spider silk and web types

All spiders produce silk, but not all build webs. Silk is used for webs, draglines, egg sacs, sperm webs, and prey wrapping. Web architecture is a strong identification cue.

Major web types

Orb webs - flat wheel-shaped webs, built by Araneidae and Tetragnathidae.

Tangle (cobweb) webs - three-dimensional irregular webs, built by Theridiidae (including widows and common house spiders).

Funnel webs - sheet with a retreat tube, built by Agelenidae (grass spiders, hobo, giant house).

Sheet webs - horizontal sheets with tangle above, built by Linyphiidae.

Cursorial (web-less) hunters

Wolf spiders, jumping spiders, and most ground-dwelling species do not build prey-catching webs. They produce draglines and egg-sac silk only.

References

  1. [1]Spider Silk - University of Kentucky Entomology. Accessed June 2026.

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