Araneus quadratus

Four-spot orb-weaver
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Araneidae
Genus:	Araneus
Species:	A. quadratus
Binomial name
	Araneus quadratus; Clerck, 1757
Synonyms
	Aranea reaumurii; Aranea quadrimaculata; Epeira quadrata; Aranea reaumuri; Araneus flavidus;

Araneus quadratus, the four-spot orb-weaver, is a common orb-weaver spider found in Europe and Central Asia, and as far as the Kamchatka Peninsula and Japan.^[1] Females can reach 17 mm in length, especially when gravid, with males around half that. They are quite variable in appearance, ranging from brown to bright orange or green, but they always have the characteristic four white spots on the abdomen. The darker color morphs are easier to identify, due to the contrast between the white spots and the rest of the body. The legs are sometimes brightly striped.

A female eats a crane fly

The spider lives in gardens, wooded areas, or wherever there is vegetation to string an orb web across. This species builds its web close to the ground to catch jumping insects such as small grasshoppers. The female builds the more elaborate web, complete with a funnel-shaped retreat off to the side where she goes during inclement weather. The web is smaller and closer to the ground than those of other species of orb-weavers.

Adult females can actively change their color. About three days are needed to take on colors that accurately match their resting surfaces.^[2]

Subspecies

A. q. minimus (Gétaz, 1889) (Switzerland, France)
A. q.s subviridis (Franganillo, 1913) (Spain)^[3]

References

^ "Main Page". British Arachnological Society. Archived from the original on 11 December 2009.
^ Oxford, G.S.; Gillespie, R.G. (1998). "Evolution and Ecology of Spider Coloration". Annual Review of Entomology. 43 (1): 619–643. doi:10.1146/annurev.ento.43.1.619. PMID 15012400. S2CID 6963733.
^ Bern, Natural History Museum. "NMBE - World Spider Catalog". World Spider Calatog. Archived from the original on 2016-03-04. Retrieved 2022-01-06.

External links

Araneus quadratus

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[1] "Main Page". British Arachnological Society. Archived from the original on 11 December 2009.

[OxfordGillespie1998-2] Oxford, G.S.; Gillespie, R.G. (1998). "Evolution and Ecology of Spider Coloration". Annual Review of Entomology. 43 (1): 619–643. doi:10.1146/annurev.ento.43.1.619. PMID 15012400. S2CID 6963733.

[wsc7-3] Bern, Natural History Museum. "NMBE - World Spider Catalog". World Spider Calatog. Archived from the original on 2016-03-04. Retrieved 2022-01-06.

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