Currently viewing the category: "Longhorn Beetles"
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Strangest Bug I’ve EVER Seen!
Location: Superior, Wisconsin
April 22, 2012 2:38 pm
I was camping up by Superior Wisconsin, and saw this bug sitting on a wood railing. It was huge! Probably from my knuckle to my wrist in length. It had really LONG antennae, and looked like some science experiment gone wrong. For the last year I’ve been trying to identify it, but have yet to. Hoping you can fill me in on what this fascinating and yet strangely odd bug is!
Signature: ~Melissa~

Longhorned Borer Beetle

Hi Melissa,
This beetle is one of the Longicorns or Longhorned Borer Beetles in the family Cerambycidae.  We believe it is a Flat Faced Longhorn in the subfamily Lamiinae and you may reference BugGuide to see some examples.  It might even be in the genus
Monochamus, however, the detail and angle of your photo makes positive identification difficult for us.

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Uganda, Mabira forest
Location: Uganda, Mabira Forest
April 15, 2012 2:59 am
Dear Bugman,
I have made a clear picture of a beautiful insect while walking through the black mamba infested Mabira Forest in Uganda. Google cannot tell me what it is. Can you help? I can’t even tell if it is a beatle or some other form of insect.
Any help would be really appreciated!
Signature: Jille

Unknown Longhorned Borer Beetle

Hi Jille,
The best we are able to do at this moment is to provide you with a family.  This is a Longhorned Borer Beetle in the family Cerambycidae.  We agree it is a beautiful insect and we hope to eventually provide a species name for this posting.

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Brown Beetle
Location: Central Florida
April 10, 2012 9:32 pm
I found this huge beetle on our front window. Do you know what kind it is?
Signature: Shari

Hardwood Stump Borer

Dear Shari,
This magnificent creature is
Mallodon dasystomus, commonly called the Hardwood Stump Borer.  According to BugGuide:  “Larvae bore in live heartwood of trees, esp. oak, sycamore, take 3-4 years to mature. Can be economically damaging. Adults attracted to UV lights.”  While this is not a venomous species, a nip from those “robust, gigantic jaws” would likely be quite painful and could possibly draw blood.

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never seen before
Location: Texas
April 8, 2012 10:17 am
we had a friend bring us some wood he cut on his property in Quitman TX in the area of Lake Fork. He brought it to us in the Dallas TX area and we noticed about 3 weeks after that the the wood had all these bugs swarming all over it. we have never seen anything like this before and can not find anything like it on the site hope you can help we would like to get rid of it but are afreaid to move it as we don’t know if these are dangerous. also this pile of wood is not next to the house but is next to our WOOD fence and do not know if these feed off the wood or not.
Signature: James

Red Headed Ash Borer

Hi James,
Transporting wood that contains the larvae or pupae of insects is one of the most common methods that human beings can facilitate the range expansion of insect species that bore in wood.  This is a Red Headed Ash Borer,
Neoclytus acuminatus, and according to BugGuide:  “Larvae feed on the sapwood of ash and other hardwoods, and even occasionally on vines and shrubs. Larvae are common in downed timber with the bark left on.”  Your wood fence would not be an attractive food source for a new generation, but living trees, especially older trees that may already have been weakened by disease or injury are a likely location for laying eggs.

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Big Mystery Beetle
Location: Algonquin Park, southeastern Ontario, Canada
April 1, 2012 8:12 pm
Hi – we spotted this beetle on our van while stopped on the roadside in Algonquin Park in Ontario, Canada last summer (July 1st, 2011).
At first, we thought about the Asian Long-Horned beetle, but checked out pics of the ALHB and saw some significant differences (white spots, etc.)
The roof rack doesn’t help much to demonstrate scale but, as I remember, this guy was about 1.5 – 2 inches long (head to tail), and the antennae were at least 3-5 inches long.
No idea what the red dots are on the beetle, but they look as though they aren’t a part of him…
Can you help us identify this one?
Signature: Allan

White Spotted Sawyer

Hi Allen,
Your large beetle is one of the Longhorned Borer Beetles or Longicorns in the family Cerambycidae, and it is in the same family as the Asian Longhorned Beetle, but your individual is a native.  We posted a letter last year of another White Spotted Sawyer from Canada and at that time we identified the hitchhikers as Phoretic Mites.  Here is a link to that posting.

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Unidentified New Zealand bug
Location: Marahau, northern South Island, New Zealand
March 14, 2012 7:16 am
Hello there!
I was going through some pictures I took in New Zealand a couple of years ago, and came across an image of a large bug, which looked interesting at the time but which I never ID’ed. I’d love to know what it is.
It was just resting on the side of a building when I found it. I should mention this was in the middle of summer and the weather was quite warm and a bit humid; we weren’t out in the ”bush” or forest, but on a farm-like campground next to a National Park. This was about a 20-minute walk from the sea.
Any help would be much appreciated–I’m rather curious to know what this is!
Signature: M. Fullick

HuHu Beetle

Dear M. Fullick,
The distinctive HuHu Beetle,
Prionoplus reticularis, is the largest beetle found in New Zealand according to the Te Ara Encyclopedia of New Zealand.  It is a member of the Longhorned Beetle family Cerambycidae and the grubs of the beetles in this family are borers in woody trees and shrubs.  Your individual is a female based on the presence of the pointed ovipositor that she uses to lay eggs in dead trees and posts.  The Tai Awatea government website has some marvelous information including that the beetles are attracted to lights.  The grubs are edible and were eaten by native Maori people.

Thank you very much! I’d definitely heard of the grubs (they’re famous in NZ), but had never seen the actual beetle until the day I took that picture. She must have been waking up, it was early evening when I found her.
Thanks again–cheers!

What's That Bug? does not endorse extermination