Observation 164628: Arachnida

When: 2014-05-03

Collection location: Lake Padden Park, west end, Bellingham, Whatcom Co., Washington, USA [Click for map]

Who: Kira (Kiradee)

No specimen available


Proposed Names

60% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
By: Elsa (pinknailsgirl)
2014-06-01 15:08:41 PDT (-0700)

It’s a mite gall for sure, so Arachnida would be correct, thanks for correction.

Re: Tree
By: Byrain
2014-05-05 10:12:06 PDT (-0700)

This is the only thing I can find concerning any galls and Oemleria is this bugguide sighting which really shows Prunus galls misidentified as Oemleria. One of the comments suggests that O. cerasiformis should have smooth leaf edges while Prunus will be serrated which seems to be the case in these images?

By: christopher hodge (christopher hodge)
2014-05-05 09:56:13 PDT (-0700)

The tree does look like an indian plum and given Prunus and Oemleria are in the same subfamily Amygdaloideae, it seems likely an organism that enjoys prunus species may also find Oemleria a suitable host.

By: Byrain
2014-05-05 08:34:21 PDT (-0700)

Are you sure the host is not Prunus? I’m not finding much records of galls on Oemleria cerasiformis, but if this is on Prunus they appear to be Eriophyes emarginatae galls as Dmitriy suggested which are mite galls (Arachnida not Insecta).

Eriophyes emarginatae
By: Dmitriy Bochkov (convallaria)
2014-05-05 04:05:59 PDT (-0700)

looks like that or some other insect galls

By: Jay (Tuber magnatum)
2014-05-04 22:31:45 PDT (-0700)

very intriguing! have we ruled out insect eggs as a possibility? that was my first thought

By: Kira (Kiradee)
2014-05-04 11:58:28 PDT (-0700)

It was growing on Indian Plum, Oemleria cerasiformis.

Plant ID
By: Britney Ramsey (Riverdweller)
2014-05-04 09:13:43 PDT (-0700)

Do you have any idea what type of plant this was growing on? Would be helpful for ID. :)

Created: 2014-05-04 08:43:19 PDT (-0700)
Last modified: 2014-06-01 15:09:26 PDT (-0700)
Viewed: 99 times, last viewed: 2019-07-12 18:52:05 PDT (-0700)
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