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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Curculionoidea » Snout and Bark Beetles (Curculionidae) » Bark and Ambrosia Beetles (Scolytinae) » Unidentified Scolytine Galleries
Photo#2098847
Scolytus multistriatus galleries?
Copyright © 2022 Marci Hess

Scolytus multistriatus galleries?
Town of Blanchard, Driftless Prairies, Lafayette County, Wisconsin, USA
March 2, 2022
This was from a girdled boxelder tree.

Images of this individual: tag all
Scolytus multistriatus galleries? Scolytus multistriatus galleries? Scolytus multistriatus galleries? Scolytus multistriatus galleries?
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Contributed by Marci Hess on 19 March, 2022 - 12:01pm
Last updated 21 March, 2022 - 1:14pm

Moved
Moved from Snout and Bark Beetles.
… Marc DiGirolomo, 21 March, 2022 - 1:14pm login or register to post comments

Interesting
It certainly does look like the Scolytus gallery type. There are other genera with that basic gallery type though too, so I couldn't say for sure that it is Scolytus. Scolytus multistriatus would only be in elm.

The interesting thing to me is the host. There aren't any Scolytus in North America recorded from Acer. The only Scolytine I'm aware of known specifically to attack Acer negundo is Euwallacea fornicatus, but this isn't that species (they are shothole borers that go into the wood, not through the cambium). There are a bunch of Scolytines that go into other Acer spp., but I'm not sure if this is any of those. I'm really curious what made this gallery.

To give me an idea of scale, what is the diameter of this stem? Would you be willing/able to look for more galleries in this tree (maybe some are still active)?
… Marc DiGirolomo, 21 March, 2022 - 1:12pm login or register to post comments

 
Diameter of stems
The snag was easily 1.5-2' in diameter. The branch that I photo'd and posted originally was about 8" diameter. I am posting a few more photos of this same snag with different appearing galleries. I will look at over boxelders we have but this tree no longer exists.
… Marci Hess, 23 March, 2022 - 8:21am login or register to post comments

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