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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 » Striped Volcano Gall Wasp (Feron atrimentum)
Photo#1595230
Striated cone galls - Feron atrimentum
Copyright © 2018 Hema Shah

Striated cone galls - Feron atrimentum
Clayton, Contra costa County, California, USA
September 22, 2018
Contributed by Hema Shah on 23 September, 2018 - 11:28pm
Last updated 27 September, 2020 - 6:33am

Moved
Moved from Unidentified Galls.

Thanks--we'll go with that!
… Charley Eiseman, 27 September, 2020 - 6:33am

On what plant?
Is this on oak? If so, what kind? Always include host plant information for galls, and if you don't know what the plant is, include photos of the plant.
… Charley Eiseman, 27 October, 2018 - 9:15am

 
Gall wasp is Andricus atrimentus if host is Q. douglasii
If the leaf is from a blue oak, Quercus douglasii, this distinctive volcano-shaped gall is A. atrimentus, which can be found in the SF Bay Area and other parts of California.
… Nancy Asquith, 27 September, 2020 - 1:02am

Moved
Moved from ID Request.
… Ken Wolgemuth, 26 October, 2018 - 1:22pm

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