T. californicum female - Theridion californicum

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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae) » Theridion » Theridion californicum

Photo#424472

Copyright © 2010 Ken Schneider

T. californicum female - Theridion californicum -

Stulsaft Park, Redwood City, San Mateo County, California, USA
July 10, 2010
Size: 4 mm

I beat this adult female theridiid from a willow tree overlying a creek. The epigynum is a perfect match to this species - one of the few Theridion sp. with a raised epigynum and a different profile than neomexicanum, which I've also found at this location. Comments welcome. I'm starting to get more comfortable with this genus, but there are many species and I'm always open to correction! :)

Images of this individual: tag all

T. californicum female - Theridion californicum - female

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Contributed by Ken Schneider on 10 July, 2010 - 4:03pm

Variant abdominal pattern?

Just noting that the abdominal pattern is somewhat unusual in this female, but Levi 1957 does mention "One specimen with a median red dorsal band".

… Ken Schneider, 7 July, 2013 - 4:45pm

Hi Ken,

The patterns in many of the species in this genus can vary greatly.

-K

… Kevin Pfeiffer, 8 July, 2013 - 3:49am

Yes -

thanks Kevin - great to hear from you! Just wanted to note that, based on the other images in BG and other females I've found, this may be one of the less common patterns in this species.

… Ken Schneider, 8 July, 2013 - 8:50am

Nice work; after working on t

Nice work; after working on these small specimens for a while, you'll soon be able to perform microsurgery.

-K

… Kevin Pfeiffer, 11 July, 2010 - 2:25am

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