Looking inside a foaming canker

29 October 2016

After taking video of the foam coming from a beetle entry hole, the next step was to open it up and see what was producing the foam. Below are photos and a video.  The video takes us from the surface to the beetle gallery. Note the white gel-like substance. That is probably the source of the gas in the bubbles. No beetle was found, but we may have touched a beetle elytra.

Please share your ideas on this.

 

Some foam still being produced at the western oak bark beetle entry hole.
Some foam still being produced at the western oak bark beetle entry hole.
After wiping away the foam, the hole is visible. The foam was very slow to come back, compared to what we saw in the earlier videos.
After wiping away the foam, the hole is visible. The foam was very slow to come back, compared to what we saw in the earlier videos.
The beetle entry hole from farther away.
The beetle entry hole from farther away.
After one 'layer' sliced away, we can still see foam coming out of the hole.
After one ‘layer’ sliced away, we can still see foam coming out of the hole.
The overall look of the beetle gallery, where the foam is coming from.
The overall look of the beetle gallery, where the foam is coming from.
Another layer sliced away takes us to the beetle's chamber. Note the white gel-like material.
Another layer sliced away takes us to the beetle’s chamber. Note the white gel-like material.
A close-up of the beetle chamber with the white gel-like material.
A close-up of the beetle chamber with the white gel-like material.
A close-up of the beetle chamber with the white gel-like material.
A close-up of the beetle chamber with the white gel-like material.
This is a picture of the back side, or underside, of the second slice, showing that white gel is there also.
This is a picture of the back side, or underside, of the second slice, showing that white gel is there also.

 

 

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