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Species Theridion californicum

Linyphiid - Theridion californicum - male T. californicum female - Theridion californicum - female yellow spider #3158 - Theridion californicum - female T. californicum female - Theridion californicum - female T. californicum male - Theridion californicum - male T. californicum male - Theridion californicum - male sprinkles the spider  - Theridion californicum - male sprinkles the spider  - Theridion californicum - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Theridiidae (Cobweb Spiders)
Genus Theridion
Species californicum (Theridion californicum)
Identification
This species appears to be highly polymorphic with regards to dorsal abdominal pattern, with pure yellow and white morphs and a series of morphs with black or red lines, rings or "blobs" on the abdomen (1).
Range
"Pacific coast states (2)".
Works Cited
1.An exuberant, undescribed colour polymorphism in Theridion californicum...
Geoff S. Oxford. 2009. Biological Journal of the Linnean Society, 96:23-34.
2.The spider genera Enoplognatha, Theridion, and Paidisca in America north of Mexico (Araneae, Theridiidae)
H.W. Levi. 1957. Bulletin of the American Museum of Natural History 112, article 1, 123 p.