What's That Bug? does not endorse extermination

Mesquite Larvae
December 1, 2009
Found inside an aged mesquite log in Scottsdale, AZ. What is it? What will it turn into and in how long? Pest? Affects other wood, or just mesquite? If pest, natural predators?
Sergio Vie
Scottsdale, AZ

Flat Headed Borer Larva

Flat Headed Borer Larva

Hi Sergio,
This is a Flat Headed Borer Beetle Larva in the family Buprestidae, often called the Metallic Borer Beetles or Jewel Beetles.  We believe, based on your location and the host plant, that it is Hippomelas sphenicus.  We are providing a link to BugGuide with an image of the adult beetle.  It is also pictured on the Sonoran Desert Naturalist website.

What's That Bug? does not endorse extermination

9 Responses to Flat Headed Borer Larva: Hippomelas sphenicus maybe

  1. nicole says:

    I found one of these in a round of oak my husband split. I live in Northern, CA are they native to my area?

    • bugman says:

      There are many species in the family across North America and it is difficult to distinguish one species from another in the larval stage.

  2. Lee says:

    I have found several of theses from 1 tree segment of an Almond tree in Corfu Greece, wierd!!!!! Alien like??

  3. Robert Jowers says:

    I have found them in both pecan and oak here in Texas while splitting the wood. found more in the pecan than the oak.

  4. James says:

    Huntsville, Alabama, I split some logs that have been sitting for sevefral months and was from a dead tree that fell in my yard. There are 20-30 in each 8 inch round 12 inch long log.

  5. Mal says:

    I found one in the old wood on a rose bush that I was cutting back in So Cal.

  6. chase says:

    they are odd any one have a tip to distinguish them

  7. Thomas says:

    Hired to remove 4 dead cypress trees here In Riverside California and took the wood home to split and burn, every biscuit I split 5-10 of these little guys fell out there were I’d estimate somewhere in the ball figure of 100-150 of these guys infesting these 4 trees I read that they go for stressed/dyeing and/or dead woods but the high numbers which infested these trees is suspect at best.

  8. Henry R. says:

    I just wonder if these werms give the mesquite wood its taste or not. In this part of the country mesquite is the most abundant cooking wood we have and you can’t get rid of all those creepy, little critters. All I can say is, I’m over 50 and I’m not dead yet, so t the very least they are not poisonous.

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