which gall is this? - Andricus quercuscalifornicus - BugGuide.Net

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Photo#119286

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

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

"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

apple gall

Boy! That was fast! Thank you
Michel Kleinbaum

… Michel Kleinbaum, 18 June, 2007 - 4:29pm

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

gall wasps

Thank you for this information
Michel Kleinbaum

… Michel Kleinbaum, 26 July, 2007 - 11:49am

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