Currently viewing the category: "Metallic Borer Beetles"
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Subject: Jewel Beetle
Location: Augusta, GA, NA
May 21, 2017 3:12 pm
Can you tell me what kind of beetle this is and where is it from?
Signature: CJC

Red Legged Buprestis

Dear CJC,
This Jewel Beetle is a Red Legged Buprestis,
Buprestis rufipes.  According to Beetles of Eastern North America:  “Adults are active in spring and summer.  Larvae develop in deciduous hardwoods” including honeylocust, beech, maple, hickory, tulip tree and slippery elm.

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Subject:  Metallic Wood Boring Beetles mating on a native California Black Walnut Branch
Location:  Mount Washington, Los Angeles, California
May 17, 2017 2:33 PM
We just discovered these Metallic Wood Boring Beetles “in flagrante delicto” on a twig of a Calfornia Black Walnut in our office garden.  They have excellent eyesight and moved to avoid the camera.  Interestingly, Charles Hogue does not list any members of the family in his landmark book, Insects of the Los Angeles Basin.  We are currently on a mission to attempt to identify the species.

Mating Jewel Beetles:  Dicerca hornii

We have put in a request to Dr Doug Yanega at UC Riverside, but meanwhile, we found this information on Dicerca horni Crotch on the UC Riverside Urban Entomology page:  “This is a common flatheaded borer of the Pacific Coast states. It belongs in a genus of medium-sized buprestids that are characterized by their dull-bronze color and the prolonged tips of the elytra (plate II, 1; figure 126). Dicerca horni is a dark, grayish bronze, 13 to 25 mm long, and has small, black, narrow, broken ridges on the dorsum. The larvae are approximately 2.33 times longer than the adults. This species occurs on many species of deciduous trees (including fruit trees) and shrubs, inhabiting dead or dying trees or dead wood on living trees. Adults may be seen from April to September. This is not a pest, but we receive many requests for its identification.” The species name led to this BugGuide image of Dicerca hornii (BugGuide has added an additional i to the scientific name) and it looks like a match.  There is also a lovely image on CalPhotos.  Our image shows some very pretty magenta highlights on the legs and edges of the thorax.

Confirmation Courtesy of James Hogue
This looks like a good name to me.  I have specimens of this species from the mountain ranges surrounding the L. A. Basin and from the lowlands of the San Fernando Valley.
Jim Hogue

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Subject: Can you identity this beetle for me?
Location: Darlington QLD Australia
April 24, 2017 3:38 am
Hi, I found this beetle in a gorge and I was wondering if you could identify it.
Signature: Place on email

Regal Jewel Beetle

This is a Jewel Beetle in the family Buprestidae, and based on images posted to Australia:  Land of Stigmodera, we believe it is Calodema regalis or a closely related species.  There is also an image named the Regal Jewel Beetle posted to Csiro that supports that identification.

Regal Jewel Beetle

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Subject: Golden Yellow bug
Location: Cyprus, Kalo Chorio
April 22, 2017 7:18 am
Found this outside the offices near the flower bushes, trying to figure out what species this is, looks like some sort fuzzy little scarab but not sure what kind exactly.
Signature: Random Office worker

Jewel Beetle

Dear Random Office Worker,
We believe we have correctly identified this lovely Jewel Beetle in the family Buprestidae as
Julodis armeniaca cypria, a subspecies endemic to Cyprus, thanks to the Nature Wonders site where it states:  “Endemic subspecies of Cyprus. The nominal species J. a. armeniaca Marseul, 1864, can be found in Turkey and the Near East.”  It is also pictured on BioLib.  Though this is a new species to our site, we do have amazing images from South Africa of a relative in the same genus, the Brush Jewel Beetle.

Jewel Beetle: Julodis armeniaca cypria

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Subject: beetle?
Location: Ruffin, sc
April 13, 2017 4:13 am
This insect flew in my daughters hair while we were walking around outside. It is kind of hard to tell by the picture but the color was gold. Thank you for your time and hope you have a great day.
Signature: Melissa

Sculptured Pine Borer

Dear Melissa,
Because of the metallic coloration of many members of the family Buprestidae, they are known as Metallic Borer Beetles or Jewel Beetles.  Your individual is one of the Sculptured Pine Borers in the genus
Chalcophora.  Based on BugGuide images, we suspect it might be the Southern Sculptured Pine Borer, Chalcophora georgiana, or the the Sculptured Pine Borer, Chalcophora virginiensis, also pictured on BugGuide.  The former is described on BugGuide as being:  “coppery green, can be easily separated by the acute elytral apex with a strong sutural spine; displays very little variation.”

Sculptured PIne Borer

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Subject: Beetle
Location: Portland, Oregon
February 19, 2017 5:13 pm
I found this beetle indoors today. I think it is a Golden Buprestid Beetle. I want to know if it is a good bug or a bad bug.
Signature: Lois Biz

Golden Buprestid

Dear Lois,
We agree that this is a Golden Buprestid, but when it comes to insects, “good” and “bad” are such relative terms.  Since the native range of the Golden Buprestid includes Oregon, this is a native species for you and native species occupy a place in the food chain as well as in the complicated, interconnected web of life in an ecosystem that we feel compelled to maintain that all native species are good in the overall scheme of things.  Introduced species can throw off the balance of life in a geographic region to which they have been introduced if they have no natural enemies to help control their populations, so we often consider introduced species to be problematic in their new homes, a consideration that lead to the creation of the Invasive Exotics tag on our site many years ago.  According to the genus page on BugGuide:  “Larvae feed on wood of various conifers and deciduous trees, incl. Fagus (Beech), Populus (Cottonwood), Acer (Maple), and Quercus (Oak).”  It is our understanding that native Metallic Borer Beetles are never plentiful enough in their native surroundings to do significant damage to healthy trees, unlike the related and introduced Emerald Ash Borer that has decimated populations of Ash trees in eastern North America.  As a point of interest, Golden Buprestids have been known to emerge many years after lumber has been milled.  Seems milling the lumber slows the maturation process, but the larvae are able to survive and continue to feed on the dead wood.

What's That Bug? does not endorse extermination