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Photo#1042934
Pontania californica? galls - Pontania californica

Pontania californica? galls - Pontania californica
Paramount Ranch, Los Angeles County, California, USA
February 26, 2015
I noted a few of these galls on some sort of willow today.

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Pontania californica? galls - Pontania californica Pontania californica? larva - Pontania californica

Moved
Moved from ID Request.

These are certainly Pontania galls. Californica is the common known species in the area, if anyone doubts this they can be moved to genus level.