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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) » Andricus » California Gall Wasp (Andricus quercuscalifornicus)
Photo#119286
which gall is this? - Andricus quercuscalifornicus
Copyright © 2007 Michel Kleinbaum

which gall is this? - Andricus quercuscalifornicus
Salem, Marion County, Oregon, USA
June 18, 2007
Size: 7cm at its widest
I found these galls on a young Oregon White Oak in our back yard
tag · login or register to post comments
Contributed by Michel Kleinbaum on 18 June, 2007 - 1:20pm
Last updated 25 July, 2007 - 1:50am

Moved
Made new species page & moved from Gall Wasps.
… Joyce Gross, 25 July, 2007 - 1:50am login or register to post comments

"Oak apple"
I believe this is an "oak apple" gall (or, rather, a pair of them), a type of "bullet gall" produced by cynipids.
… Eric R. Eaton, 18 June, 2007 - 1:38pm login or register to post comments

 
apple gall
Boy! That was fast! Thank you
Michel Kleinbaum
… Michel Kleinbaum, 18 June, 2007 - 4:29pm login or register to post comments

 
oak apple
The scientific name is Andricus quercuscalifornicus, which occurs from southern Washington south to northern Mexico (per Ron Russo's book). It occurs on Oregon oak and other species of white oak.

These galls support quite a lot of insect life, not just the wasps that made the galls but others that are parasites or inquilines (live in the gall without killing the creator of the gall).
… Joyce Gross, 25 July, 2007 - 1:44am login or register to post comments

 
gall wasps
Thank you for this information
Michel Kleinbaum
… Michel Kleinbaum, 26 July, 2007 - 11:49am login or register to post comments

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