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

Upcoming Events

Spring 2021 gathering in Louisiana, April 28-May 2. Here's how to add your images.

National Moth Week 2020 photos of insects and people.

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

Orbweaver - Argiope argentata - female

Orbweaver - Argiope argentata - Female
Point Mugu State Park, Ventura County, California, USA
March 21, 2007
Size: 6-7 mm
Searching the Pricklypears (Opuntia littoralis) for another little spider I had photographed a week earlier (see here: 1 ), I came upon two other species. This is one of them, and I hope someone can help coming closer than Araneidae.

Images of this individual: tag all
Orbweaver - Argiope argentata - female Orbweaver - Argiope argentata - female

Looks like
A mid molt level female of the Argiope argentata. (Not sure I know what a male looks like.) Those tubercles will enlarge in the older gals. I think they are known for hanging out on Opuntia.

Photo of male here:

Thanks, Herschel,
it does have an Argiope posture. How often do they molt? I might be able to follow this as I return to Mugu.

Herschel nailed it. Tom M. and Paul posted similar specimens, but earlier instars based on the stabilimenta.
Growth rate is generally dictated by prey availability.

Thanks to both of you,
Herschel and Jeff. In addition, I know what a Hollenbeck question is.

Like a Hollenbeck question to me. I assume the big spiders molt far less frequently than the little captive jumpers but I don't have an estimated molt cycle time.

I guess I'll see, perhaps, in a little while.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.