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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Araneus diadematus - Cross Orbweaver

Hairy-Headed 3mm Spider - Araneus diadematus Found out front of my house - Araneus diadematus Cross Orbweaver - Araneus diadematus Mama w/Egg case - Araneus diadematus - female Araneus  - Araneus diadematus - female Araneus diadematus, Vancouver, BC - Araneus diadematus - female Spider on my chicken coop - Araneus diadematus Large nocturnal spider - Araneus diadematus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Araneidae (Orb Weavers)
Genus Araneus
Species diadematus (Cross Orbweaver)
Other Common Names
Cross Spider, Cross Orbweaver, European Garden Spider
Body length adult female: 6-20mm.
Body length adult male: 6-13mm.
The dorsal, white cross on the abdomen can typically be diagnostic:

There is also an atypical variation that does not have the cross. This might be confused with A. gemma. See atypical diadematus here:

Ventral Pattern

Female epigyne/scape:

Mostly southern Canada and the northern 1/3 of the USA (now including northern California). Uncommon in the Great Plains area.
Common in gardens, though it is more a species of scrubby heathland or amongst gorse.
Life Cycle
Shriveled Female and egg sac:

Mature couple:

Mature male, immature female:

Males reach sexual maturity before females do, and will often pair off with an immature female in order to claim her.



Egg Sac
Introduced to North America from Western and Northern Europe.
Print References
Dondale, C. D., J. H. Redner, P. Paquin & H. W. Levi. 2003. The insects and arachnids of Canada. Part 23. The orb-weaving spiders of Canada and Alaska (Araneae: Uloboridae, Tetragnathidae, Araneidae, Theridiosomatidae). NRC Research Press, Ottawa, 371 pp.
Internet References - Illustrations.