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What's That Bug? does not endorse extermination

Mating Banded Longhorns

Mating Beetles / Northern Michigan
Sat, Nov 1, 2008 at 9:15 AM
These beetles were all over a small meadow next to our cottage in Maple City Michigan during the first week of August, 2008. Caught these two mating. Ooh la la… I have no idea what kind they are and haven’t been able to ID them on my own.
Your site is wonderful! Thanks!
Jeff
Maple City Michigan, USA

Mating Banded Longhorns

Mating Banded Longhorns

Hi Jeff,
Your mating beetles are Banded Longhorns, Typocerus velutinus, in the group known as Flower Longhorns.  According to BugGuide:  “Larvae feed on decaying hardwoods such as oak, hickory. Adults usually found in daytime, but do come to lights, so probably somewhat nocturnal. “

Cottonwood Borer

Not a Twig Girdler, but what??
Tue, Oct 21, 2008 at 11:35 AM
We live in Oklahoma in a mostly natural forrest of about 200 acres, creeks, bluffs and trees. This bug was on the patio as we were buildiing a cabinet. We have evidence of Twig Girdlers…branches cut off on the ground with green leaves still in tact. So I thought it may be one, but it did not have the distinctive markings a Girdler has. The tenacles are very long, and the length of the bug is about 2-3 inches and the mouth appears to be large enough to be used in biting or cutting. It is slightly more yellow than the picture shows with a definite black pattern. Any ideas?
skizi
Eastern Oklahoma

Cottonwood Borer

Cottonwood Borer

Hi skizi,
Your Longhorned Borer Beetle is a Cottonwood Borer, Plectrodera scalator.  Most of our photos of this spectacular beetle come from Texas and Oklahoma.

Ponderous Borer

Large unknown beetle
Sun, Oct 19, 2008 at 9:25 AM
Hi Bugman,
About a month ago my girlfriend and I came across this guy hanging out on the side of our apartment building. What may not be readily apparent from the photo is the thing’s size; it was the largest insect I’ve ever met in person, about as long as a credit card.We found it at night, and it seemed to be cold and sluggish. We live in western Montana. After a little research, I suspect this may be a prionid. Any idea what that spike coming out of the abdomen is? Perhaps an ovipositor unsuccessfully trying to bore into a brick?
Matt,
Missoula, MT Western Montana

Ponderous Borer

Ponderous Borer

Hi Matt,
You are correct about this being a Prionid. It looks like Ergates spiculatus, the Ponderous Borer, which has numerous additional common names, including Pine Sawyer, Western Pine Sawyer, Spined Woodborer, and Ponderosa Pine Borer.  Your specimen is a female and her ovipositor that resembles a stinger is visible

What's That Bug? does not endorse extermination

Brown Prionid

Thu, Oct 9, 2008 at 4:18 AM
Hey Bugman, I love your site. It has been a favorite since we moved into our NJ home 4 yrs ago. I know you are quite busy, but I think this is a brown long horn beetle. Could you please tell me if is, and how menacing they are to our trees & gardens. I have noticed a number of giant stag horns also lately. Thank you in advance.
Cindy Lea
Plainfield, NJ

Brown Prionid

Brown Prionid

Hi Cindy,
You are correct, but more specifically, this is a Brown Prionid, Orthosoma brunneum. According to BugGuide, it “Breeds in poles, roots(?) in contact with wet ground. ” We would presume that the species is not a problem for healthy trees, but that it may become a problem if it breeds in support poles that are in contact with the ground. We doubt it is plentiful enough to cause you any concern.

Eucalyptus Borer

Long antennae beetle found in So. California
Seems a lot smarter than cockroaches and a lot slower. Can fly very well and seemed to make a quiet hissing noise when we first moved the grass around him. After the pursuit began, he went silent and we almost lost him as a result. He was found on the grass near some wood from a eucalyptus we had just cut down.
Weerdbugs Findmi
Carlsbad California 3.5 miles East of the Ocean

Eucalyptus Borer

Eucalyptus Borer

Dear Weerdbugs,
It has been many years since we have received an image of a Eucalyptus Borer, Phoracantha recurva or Phoracantha semipunctata.   According to BugGuide, there are two species, both introduced from Australia.  Our edition of Charles Hogue’s Insects of the Los Angeles Basin was printed in 1993 and only mentions Phoracantha semipunctata, and indicates it was introduced “to Southern California, probably in 1982.”    Hogue also writes:  “Until this borer came on the scene, its host, eucalyptus, had been virtually free of major pests since its own arrival here after the 1860s.  It is uncertain, however, how serious a threat the Eucalyptus Long-horn Borer poses, because the beetles probably only attack trees weakened by lack of moisture, disease, or other stresses.  they also infest freshly cut wood.  Damage by larvae is characteristic and may be extensive because of their large size (length up to 1 1/2 in., or 40 mm).  They form deep broad galleries under the bark and, as they reach maturity, they girdle the tree and may kill it.”   Because it is an introduced species that has spread in California, we are going to include this Eucalyptus Borer in the Invasive Exotics section of our site, but since the beetle feeds on an introduced tree species, it really doesn’t pose as much of a threat to the native California ecosystem.

California Root Borer

Big Beetle
Hello Bug Man!
My husband and I came across this beetle while camping in San Diego county. It was early August, 2005 and this bug flew into our camp two nights in a row, but we only saw it at night. I didn’t see anything that resembled this one in your “Beetle” section. It was also very hard and heavy… at least it sounded that way when it would land.
BTW… LOVE this website!!
Excitedly Awaiting a Response!
San Diego, CA

California Root Borer

California Root Borer

Hi Excited,
Your large beetle is a California Root Borer or California Prionus, Prionus californicus. The antennae on your specimen indicates that it is a male. Our edition of Charles Hogue’s Insects of the Los Angeles Basin indicates that adults emerge in early summer. The late appearance of this specimen might be a sign of impending climactic changes. The California Root Borer is attracted to lights. The large grubs were eaten by Native Americans and there is a growing interest Entomophagy, of the consumption of insects, so we will also file your letter under Tasty Morsels, our Edible Insect section.

Elderberry Borer Beetle

yellow and turquoise bug
Saw this bug while taking a walk. About an inch long for body.
Never saw such beautiful bright colors.
Looks like it’s been painted with metallic auto paint.
Kennett Square PA
Cathy &Carlos

Elderberry Borer

Elderberry Borer

Hi Cathy and Carlos,
This beauty is an Elderberry Borer, Desmocerus palliatus, also known as a Cloaked Knotty-Horn.   The larvae burrow into the  stems and roots of elderberry shrubs and the adults feed on pollen.

Locust Borer

Please ID this beetle found on Cape Cod
I found several beetles like this in a patch of flowers in a saltwater marsh on Cape Cod. There were lots of aggressive wasps around the flowers that chased off bees and other insects that approached (and me!), but these beetles were left alone. I have never seen this beetle before, and I’d like to know what it is. Also, is the black and yellow coloration a strategy to fool the wasps into accepting their presence?
East Sandwich, CApe Cod, MA
Tim Crowninshield

Locust Borer

Locust Borer

Hi Tim,
What a positively gorgeous photo of a Locust Borer.  These wasp mimic beetles are found in the late summer and early autumn, and they are frequently associated with goldenrod blossoms.  Their coloration helps them fool potential enemies.

Unknown Long-Horned Borer Beetle from Thailand

Weird Bug from Thailand
Hi,
I was hoping that you could help me identify this bug please from when I was living in Jomtien, Thailand. It chased me (or so it seemed) whilst I was outside put my washing to dry. After hiding in an out building for 10 minutes I ran back to the main house to tell me husband. When I went back outside it seemed to have been waiting for me and flew at me again. It finaly settled on a tree and my husband took this picture. Thank you for any information you can give. Love the site.
Stephanie (UK)

Cerambycid from Thailand

Cerambycid from Thailand

Hi Stephanie,
This surely is a spectacular looking Long-Horned Borer Beetle in the genus Cerambycidae. We are not certain of the species, and since we have several days of catch-up to do with posting since our new site migration, we haven’t the time to research this further. We feel fully confident that one of our loyal readers will be able to provide a proper identification, and then use the new comment option on our site to post an identification. To further assist in the identification, a larger file can be downloaded by clicking on the image.

Update: 23 September 2008
Daniel:
Finally went to see the new site….
The big, long-legged yellow longhorn with the black stripes from Thailand is Gerania bosci, apparently at least an uncommon species in collections.  Great image, given the fear factor:-)
Eric Eaton

Longhorned Borer Beetle

Beetle?
Hi there.
I love your site, and I love beetles. I live in southeastern Utah, and I found this guy on some rabbit brush the other day. He was about 3/4 inch long (not incl. antenae), and more red than he looks in the photo. Is he some sort of fancy borer? He’s beautiful, and I am very disappointed that he had a broken antenna. Thanks for the help!
Katie

Crossidius coralinus

Crossidius coralinus

Hi Katie,
This is one of the Longhorn Borer Beetles, but it does not have a common name. It is Crossidius coralinus and there are some wonderful photos posted to BugGuide, including ones from Utah.

Mating Asian Longhorn Beetles

Asian longhorned beetle love
Love you site, check out the attached Anoplophora glabripennis shot.
Best,
Mike

Mating Asian Longhorns

Mating Asian Longhorns

Hi Mike,
We are thrilled to have your wonderful documentation of mating Asian Longhorn Beetles, especially since it will be cross referenced in our Bug Love section and our Invasive Exotic section of our new site, which we are currently about to migrate to, however, your photo lacks a location. Was this taken in native China? or is this an example of the species spread in North America? As this species has become established in the U.S., there is much information about the species online, including this UC Davis posting.

Worcester, Massachusetts.

Ivory Marked Beetle

long horn?
Hi bugman its Adrian again from georgia I found this
weird beetle on my porch… its a longhorn
that resambles banded hickory borer. Can you identify it?

Hi Adrian,
What a beautiful specimen of Eburia quadrigeminata, the Ivory
Marked Beetle, one of the Long Horned Borer Beetles in the
family Cerambycidae.

Six Banded Longhorn

WTB??
I live in northern KY. This bug was found on Northern KY University’s campus in May or June. He is probably about an inch long, flies and his antennae are long and hairy. What is he???
Shannon

Hi Shannon,
But for the extreme hairiness of the antennae, your beetle is a near perfect match to the Six Banded Longhorn, Dryobius sexnotatus, pictured on BugGuide. BugGuide also indicates it is “Uncommon (2)and listed as rare and endangered on several websites.”

Update: (08/28/2008)
Daniel:
The longhorned beetle is identified correctly. Some images show how hairy the antennae are, and some images don’t. It is all in the lighting and resolution. I lived in Cincinnati (across the Ohio River from No. Kentucky U.) for eleven years, and never saw a Dryobius in all the time I spent in forested areas there.
Eric

Cottonwood Borer

Found this bug in our front yard
Can you help us identify this critter that we found in our front yard? We live in Wichita KS and just took the picture today.
Linda Riley
wichita KS

Hi Linda,
Your beetle is a Cottonwood Borer, Plectrodera scalator.

Mating Borer Beetles

What is this?
Hope you can help…I have a number of these bugs crawling all over my shagbark hickory. Are they dangerous to the hickory? We are in south eastern Michigan. I would swear that they have five pairs of legs….or are they very thin wings? I didn’t see any flying around, but I didn’t watch for long. Hopefully you can help me identify them. Thanks,
Paul

hi Paul,
Your beetle also has two heads, because it is a mating pair. These are Long Horned Borer Beetles and we believe they are in the genus Neoclytus, probably Neoclytus mucronatus or Neoclytus scutellaris. According to BugGuide, Neoclytus mucronatus will feed on dead or dying hickory, but BugGuide also lists hickory as a food for Neoclytus scutellaris. We will contact Eric Eaton to see if he can be more conclusive.

Warf Borers Mating

Warf Borer Love!
Ha! I think I got one that you don’t have…maybe… Well, at least not on your buglove pages ;) And just for kicks, a seven spotted lady beetle. All taken in Cayuga Ontario.
Cheryl-Anne Miller

Hi Cheryl-Anne,
We do have a single image of a Warf Borer sent in 2005 and posted on Beetles 3, so the species is under-represented on our site. Your photo of a mating pair is a welcome addition. The Warf Borer, Nacerdes melanura, according to BugGuide, was: “Introduced from Europe. They have been found in wharf timbers between flooding and the high water level, especially which were in badly decayed, well-riddled wood. A severe infestation occurred in greenhouse benches in Ohio. Annual swarming of adult beetles, especially into new structures, can disrupt business operations and annoy homeowners and apartment tenants.” BugGuide also indicates: “Beetles mate in rotten wood kept moist and deposit eggs, which hatch into larvae. Pupation and adulthood follow. The life cycle from egg to adult is usually completed in one year, but in cooler climates, several years may be required to reach adulthood.” We have noticed that you have sent us multiple emails with numerous images. More than one species per letter makes archiving letters much more difficult. Once we attend to the countless other emails we have received, we will return to your communiques to see if any other images will be posted. Thanks for your contribution.

Flower Longhorn: Stenelytrana emarginata

Coppery beetle in NY - brown prionid?
Here’s a bug that appeared on an old maple tree in central New York state. The size is what surprised us when it flew. It’s huge! I tried to identify it, and it may be a brown prionid, but only its back is bronze. The rest is black. The bronze sparkles in the sun. This was on your website. It has similar wings and antennae, but this one is all brown, and the one I saw was only brown on the wing covers. Can you tell what it is? Thanks! We love your site - amazing!
Leslie

Hi Leslie,
Your beetle is in the same family as the Prionids, but a different subfamily. This is a Flower Longhorn in the subfamily Lepturinae. We believe it is Stenelytrana emarginata based on photos posted to BugGuide. Sadly, this gorgeous beetle does not have a common name.

Longhorn Beetle from Thailand: Aristobia approximator

Bug from Thailand
I am a eucalyptus farmer here in Thailand and discovered a new beetle yesterday munching on my trees. Can you please identify it for me? Thanks in advance,
Don

Hi Don,
Before you decide to spend money to eradicate the Cerambycid Beetle or Longhorn Beetle, Aristobia approximator, from your eucalyptus grove, you should know that we located a framed mounted specimen online for $109.00, which may make raising the beetles more profitable than raising the trees.

California Prionus

Prionus californicus I presume
Hello there from Palomar Mountain, California (elevation approx. 5,600 ft.)!
My husband and I found this beauty on our front porch last night. It made a wonderful quick “hiss!” to let me know that getting petted was not an appreciated activity, but it was not sufficiently annoyed to wander off. So, here is a photograph of it—an entire 5 centimeters of Prionus californicus goodness .. . and more evidence that yes, these fellows make noise when pestered. I also note that its antennae and legs appear a bit thinner than those of the other large Prionus californicus picture posted on your site . I’m wondering if you could comment on whether that is a variation which occurs with location, gender, age, randomly, or with something completely different. I know you’re busy so no worries if you have no time to respond. Also, if your email service won’t display the photo, I can resend as an attachment.
Thanks for your lovely website. Be well,
Laura

Hi Laura,
You are correct in your identification of a California Prionus. There is often individual variation within a species, but camera angle could also account for distorted perspective in some photographs which may explain your observation about antennae and leg girth.

Banded Alder Borer

Can you tell me what this is?
I was out in my garage last night and i found this!?! I live in Yelm, Washington and have for most of my life i have never seen this before. Can you help me figure this out? Thanks You Sincerely,
Andria Roper

Hi Andria,
In our humble opinion, the Banded Alder Borer, or Laurel Borer, Rosalia funebris, is one of the most beautiful and elegant North AMerican beetles.