Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 
Clickable Guide
Interactive image map to choose major taxa 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

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Cynipoidea » Gall Wasps (Cynipidae) » Oak Gall Wasps (Cynipini) » Feron » Crystalline Gall Wasp (Feron crystallinum)
Photo#1016324
Unknown gall - Feron crystallinum
Copyright © 2014 Byrain

Unknown gall - Feron crystallinum
Stebbins Cold Canyon Reserve, Solano County, California, USA
November 2, 2014
On Quercus berberidifolia, my best guess is the bisexual generation of Andricus gigas, but there is insufficient info in Ron Russo's gall book to make an determination...
Same as .

Images of this individual: tag all
Unknown gall - Feron crystallinum Unknown gall - Feron crystallinum
tag · login or register to post comments
Contributed by Byrain on 2 November, 2014 - 10:25pm
Last updated 5 January, 2024 - 9:13pm

Moved
Moved from Gall Wasps.
… Adam Kranz, 5 January, 2024 - 9:13pm login or register to post comments

unknown gall
I don't know what this is (definitely a cynipid though). I've seen it on blue oaks in the Bay Area, one time in somewhat large numbers. It could be the bisexual generation of A. gigas, but I'm not comfortable saying that without further information.

I'll try to look this species up at the Cal Academy... hopefully will be able to go there in the next couple of months. Don't know if they have A. gigas spring generation galls there or not. And I should check at Essig.
… Joyce Gross, 28 November, 2014 - 1:03am login or register to post comments

 
Where would I look at Cal Academy?
I am likely going to be there on the 7th of next month, if possible I would love to look at the galls they have. :)
… Byrain, 28 November, 2014 - 1:07pm login or register to post comments

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

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2025 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact