Help! Can you identify this insect?

On cottonwood (Populus deltoides) | Beaver Dunes State Park, Oklahoma.

On cottonwood (Populus deltoides) | Beaver Dunes State Park, Oklahoma.

Copyright © Ted C. MacRae 2014

About Ted C. MacRae

Ted C. MacRae is a research entomologist by vocation and beetle taxonomist by avocation. Areas of expertise in the latter include worldwide jewel beetles (Buprestidae) and North American longhorned beetles (Cerambycidae). More recent work has focused on North American tiger beetles (Cicindelidae) and their distribution, ecology, and conservation.
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12 Responses to Help! Can you identify this insect?

  1. Heath says:

    It’s a buprestid. Probably in the genus Agrilus, because It looks a lot like an emerald ash borer except for the colour.

  2. I assumed you knew what the beetle was and were asking about the wasp. Encyrtidae? Looks a lot like this one.

  3. Adrian Ruicanescu says:

    The Agrilus looks very close to Agrilus (Uragrilus) ater in Europe. The colour differ, but the white pattern is almost similar. Agrilus ater also lives in Populus and Salix.

  4. Jeff Weber says:

    The non-Buprestid appears to be an Encyrtid wasp. This looks like one of the wasps that parasitize the eggs of certain stink bugs.

  5. Jeff Gruber says:

    Is that a coniopterygid larva? Or is that actually part of the branch?

  6. Ben Coulter says:

    Probably way off, but the buprestid does seem to superficially resemble the sole specimen of Agrilus impexus on BugGuide.

    • Ben Coulter says:

      Subsequent research revealed that the BugGuide specimen is mislabeled. True Agrilus impexus is found in the Great Plains, while the southwest material was redescribed recently as A. paraimpexus Hespenheide. I presume the two are similar in appearance, so I’m gonna stick with my guess of Agrilus impexus.

  7. Gary Griswold says:

    For some reason I’m thinking more in the genus of Acmaeodera?

  8. Laura Miller says:

    If you are asking about the buprestid, it looks like the Goldspotted Oak Borer, Agrilus coxalis! A major pest of oaks in California that it’s thought to have come from Mexico and Arizona. Can you verify it? This is probably a State record. The insect is included in USDA-AOHIS exotic target pest lists. Compare with this image:
    and this one:

  9. Adrian Ruicanescu says:

    I’m wondering how many species keep the same dots pattern.


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