Gall of some kind? - Euura californica

Moved

… Charley Eiseman, 14 May, 2010 - 10:06am

Willow

Plant is a willow (Salix), of which there are 31 full species in California, with 9 species reported in the PLANTS database for Santa Clara County.

… John Pearson, 13 May, 2010 - 8:37pm

Thanks John,

I don't know plants so I appreciate the input. BTW, I made a mistake, it is neighboring Santa Cruz County, though it probably does not make that much difference.

… Arthur Scott Macmillan, 13 May, 2010 - 11:45pm

reminds me of Pontania

I've shot similar galls in california on a similar plant which were identified as Pontania (here). Though I'm not sure if thats what your galls are, as yours look a little more flattened than mine. The more I compare the images the more I have doubts about it, but its somewhere to start looking anyway.

… Chris Mallory, 13 May, 2010 - 2:12pm

Thanks for the info!

I'm starting to think there may have been more than one type of gall. I think some were less flattened. It was getting dark so I did not have the chance to get many shots.

… Arthur Scott Macmillan, 13 May, 2010 - 2:19pm

Pontania or Nematus seem to be the choices.

Most likely seems to be Pontania, and if it is then it can be identified to species based on the fact that the gall has tubercles on its surface.
The tubercles are indicative of Pontania californica

… Arthur Scott Macmillan, 13 May, 2010 - 2:49pm

On what basis

are you saying Nematus is a choice? I've never heard of any gall-forming Nematus species.

… Charley Eiseman, 14 May, 2010 - 10:09am