Cyclosa

Cyclosa
Camouflaged Cyclosa octotuberculata
Cyclosa insulana
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Araneidae
Genus: Cyclosa
Menge, 1866
Type species
C. conica
(Pallas, 1772)
Species

180, see text

Cyclosa, also called trashline orbweavers,[2] is a genus of orb-weaver spiders first described by Anton Menge in 1866.[3] Widely distributed worldwide, spiders of the genus Cyclosa build relatively small orb webs with a web decoration. The web decoration in Cyclosa spiders is often linear and includes prey remains and other debris, which probably serve to camouflage the spider. However, some tropical species, including C. longicauda in Peru, construct highly complex, non-linear stabilimenta that resemble the silhouette of a much larger orb-weaving spider.[4] This specific decoy strategy is hypothesized to serve as an advanced anti-predator defense by visual mimicry.[4] The name "Cyclosa" comes from Greek 'to move in a circle', referring to how it spins its web.[2]

While most orb-web spiders face downwards in their web when waiting for prey, some Cyclosa species (e.g. C. ginnaga and C. argenteoalba) face upwards.[5]

Cyclosa sp. in north Queensland, Australia

Species

As of September 2025, this genus includes 178 species and two subspecies:[1]

References

  1. ^ a b "Genus Cyclosa". World Spider Catalog. doi:10.24436/2. Retrieved 26 September 2025.
  2. ^ a b "Genus Cyclosa". BugGuide. Retrieved 2019-05-13.
  3. ^ Menge, A. (1866). "Preussische Spinnen. Erste Abtheilung. Schriften der Naturforschenden Gesellschaft in Danzig". Schriften der Naturforschenden Gesellschaft in Danzig.
  4. ^ a b Olah, George; Torres, Phillip J.; Pomerantz, Aaron F.; Kirby, Richard; Baxter, Simon; Grados, Juan; Reeves, Lawrence E. (2025). "Cyclosa Menge, 1866 (Araneidae) Orb-Weavers Build Stabilimenta That Resemble Larger Spiders". Ecology and Evolution. 15 (11) e72371. doi:10.1002/ece3.72371. ISSN 2045-7758. PMC 12589895. PMID 41209359.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  5. ^ Nakata, Kensuke; Zschokke, Samuel (2010). "Upside-down spiders build upside-down orb webs: web asymmetry, spider orientation and running speed in Cyclosa". Proceedings of the Royal Society B. 277 (1696). Royal Society: 3019–3025. doi:10.1098/rspb.2010.0729. PMC 2982030. PMID 20462900.

Further reading

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