Gall on Artemesia

Posted by bugman March 13th, 2010 at 10:45 pm

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Galls on Artemesia tridentata
March 13, 2010
Here is a photo of some different galls then I sent before. These are more common and are less rounded and in multiples joined together. I’m not sure if its a fly, beetle or mite. One guy said those other galls might be cecidomyiid fly. Both are on Artemesia tridentata.
Ernie
Okanogan, Wash.

gall sage ernie 300x257 Gall on Artemesia

Galls on Artemesia

Hi again Ernie,
Thanks for sending in more photos of Galls. Perhaps an expert in Galls will be able to do a conclusive identification.

gall sage ernie cu 300x202 Gall on Artemesia

Galls on Artemesia

Comments 1

Aariq wrote:
One trick to narrowing it down to a Cecidomyiid is that their larvae are often yellow or orange while most other gall insect larvae are white. So if you break the gall open and see a little orange guy wriggling around in there, it’s probably a midge gall. Also, gall midges primarily use plants in the family Asteraceae as hosts and your sage brush is in that family. There are plenty of other gall insects that use Artemesias as hosts though.
Posted 16 Mar 2010 at 8:23 pm ¶