Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama


TaxonomyBrowse
Info
ImagesLinksBooksData

Species Araneus gemma

Full Ventral Detail - Araneus gemma - female Spider - Araneus gemma San Diego Spider - Araneus gemma - female voucher image - Araneus gemma - female voucher image - Araneus gemma - female Golden spider with interestingly shaped abdomen - Araneus gemma Spider - camoflaged like a dead leaf - Araneus gemma - female Orb Weaver - Araneus gemma - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Araneidae (Orb Weavers)
Genus Araneus
Species gemma (Araneus gemma)
Synonyms and other taxonomic changes
Explanation of Names
Latin for "bud" or "gem"
Size
The female measures 10 to 12mm* long; male smaller than the female, measuring 6 to 8 mm long (1)
(*according to BugGuide records the female may be as large as 23 mm)
Identification
Female: carapace and abdomen vary in color from gray to brownish purple. The abdomen has anterior paired humps and may have a medial light stripe that varies in length.




Male: similar in color and pattern to the female.

Range
Along the West coast of North America from southern Alaska to southern California and inland to western Montana. 1
Habitat
Builds web in open areas of trees, large shrubs and around houses.
Remarks
This species is thought to mate with A. gemmoides which creates a cross between those two species.
See Also
Araneus andrewsi has mottled brown abdomen; usually does not have the medial brown stripe on the abdomen.
Neoscona crucifera is more orange-brown, no abdominal medial stripe and no paired humps
Eriophora ravilla - This species also has a brown form with a central dorsal white line.
Works Cited
1.The Orb-weaving Spiders of Canada and Alaska - The Insects and Arachnids of Canada Part 23
Dondale, C.D., J.H. Redner, P, Paquin and H.W. Levi. 2003. NRC Research Press.