Currently viewing the category: "Longhorn Beetles"
What's That Bug? does not endorse extermination

Subject: large beetle
Location: west end of St Thomas, USVI
November 29, 2016 5:26 pm
Hi, Bugman.
I live in the US Virgin Islands. After coming home today, I noticed a large (about 9 cm long) brownish-black beetle hiding in a notch in the outside of our balcony railing. I was hoping I could get a better photo if it came out from its hiding spot after dark, but it hasn’t moved yet. I tried identifying it going on the assumption that it’s a stag beetle, but I’ve been going in circles trying to pinpoint the species. Can you help me?
Signature: Stumped on St Thomas

Stump Borer

Stump Borer

Dear Stumped on St Thomas,
This is NOT a Stag Beetle.  It is a Prionid or Stump Borer in the tribe Mallodonini.  I greatly resembles the Hardwood Stump Borer,
Mallodon dasystomus, a North American species that is known to range as far south as Columbia.  It might be the same species as this Prionid from Puerto Rico.  The site Insectoid has a checklist of species from the Caribbean.  According to the Worldwide Cerambycidae Photo Gallery, Hovorodon bituberculatum  is found on St Thomas.  The mandibles on your individual indicate it is a male.  We would advise that you steer clear of those mandibles as they look like they might do some damage.

Hi, Daniel.
Thank you for all the information. He’s still in his spot on our railing, and looking more and more like the male Hovorodon bituberculatum. I agree that his mandibles look strong and sharp and I will definitely stay out of their way.
~Mae

What's That Bug? does not endorse extermination

Subject: Weird beetle?
Location: North Brisbane, Australia
November 25, 2016 3:38 am
Hi. I found this weird beetle thing on my bedroom floor today and freaked out thinking it was a cockroach. But I noticed the mandibles and now I’m confused. It’s about 4cm long.
Signature: Ellie

Longicorn:  Toxeutes macleayi

Longicorn: Toxeutes macleayi

Dear Ellie,
The mandibles on this Longicorn are quite impressive.  We are pretty confident we have correctly identified it as
Toxeutes macleayi thanks to images on Atlas of Living Australia and Prioninae of the World.

Longicorn:  Toxeutes macleayi

Longicorn: Toxeutes macleayi

What's That Bug? does not endorse extermination

Subject: Big Bug
Location: Bulawayo, Zimbabwe
November 23, 2016 9:02 pm
Hi Bugman
I found this Big Bug in my bath tub this morning. My son is an avid wildlife enthusiast so we caught it so the other kids could see it before we release it. i would like to know what it is so we can give the kids info about it.
Signature: Candy

Longicorn: Acanthophorus confinis

Longicorn: Acanthophorus confinis

Dear Candy,
About a week and a half ago we posted an image of a Longicorn from Tanzania that we believe we correctly identified as
Acanthophorus (Tithoes) confinis.  Upon researching that posting, we found an individual offered for sale on Ebay for $450.00, leading us to speculate this must be a rare species.  Your individual is a male, as evidenced by the well developed mandibles.

Hi Daniel
I think that is exactly what it is.  After I caught it and took it to the school for the kids to look at I also posted a picture of it on Simply the Best Bulawayo Notice Board on Facebook and to my surprise about 4 other people said they had also seen them in their homes and yards recently. My specimen will not be gracing Ebay but will be released in the school ground where another one was released a week ago hopefully to go and breed.

Hi Candy,
We are thrilled to hear you will not be profiting from your discovery.  We are tagging this posting with the Bug Humanitarian Award.

What's That Bug? does not endorse extermination

Subject: found this guy on my veranda on his back so i flipped him over, what is it?
Location: my backyard, australia, queensland
November 18, 2016 4:52 am
i just wanna know if its poisonous or some kind of cockroach? not going to kill it but i did want to pick it up, but i’m scared lol! biggest beetle looking bug i’be ever seen!
Signature: Kyla Marshall

Banksia Longicorn

Longicorn

Dear Kyla,
This Prionid Beetle or Longicorn
, is neither poisonous, nor is it a Cockroach.  At first we thought it was a Banksia Longicorn, but we realized that we have a misidentification in our archives.  We now believe both your beetle and the one in our archives is Agrianome spinicollis based on this image from BioLib, this image from Prioninae of the World and this image from the Worldwide Cerambycidae Photo Gallery.  Though it is not poisonous, it does have very powerful mandibles and it might deliver a painful bite if carelessly handled.

Banksia Longicorn

Longicorn

What's That Bug? does not endorse extermination

Subject: Bug seen in thailand
Location: Phuket, Thailand
November 16, 2016 2:54 am
This bug dropped down onto our sunbed – maybe from the palm trees? We are in Phuket, Thailand in November.
It’s about 1″ – 2.5 cm long and pale brown with markings like tree bark
Signature: JanP

Weevil we presume

Longhorned Borer Beetle

Dear JanP,
This sure is an unusual looking Beetle, and we presume it is a Weevil in the superfamily Curculionoidea.  The antennae are unusually thick.  Perhaps one of our readers will have better luck than we have had finding a matching image online.

Correction Courtesy of Cesar Crash
Thanks to a comment from Cesar, we now have a link to a Longhorned Borer Beetle genus
Pachylocerus on Cerambycidae Catalog Search.

What's That Bug? does not endorse extermination

Subject: Longhorn?
Location: Tanzania
November 11, 2016 11:58 pm
Was just wondering if this is a longhorn and if so what species? Im swedish so never mind the spelling.
Signature: Robin Lindström

Longicorn:  Tithoes confinis

Longicorn: Tithoes confinis

Dear Robin,
You are correct that this is a Longicorn in the family Cerambycidae.  We found a matching image on the PicClick website that is identified as
 Acanthophorus (Tithoes) confinis, and upon searching for that name, we found an individual for sale on Ebay for $450.00 which indicates this must not be a very common species.  The large mandibles indicates that this is a male, and we have an image of a female Tithoes confinis in our archives.  According to iNaturalist:  “Tithoes confinis can reach a length of 55–100 millimetres (2.2–3.9 in). This beetle has a massive hairy body and strong mandibles. The basic colour is dark brown. Pronotum bears two spines on both edges. Adults are nocturnal. Larvae feed on Cashew Nut Trees (Anacardium occidentale) and other trees belonging to the Anacardiaceae family.”

Longicorn:  Tithoes confinis

Longicorn: Tithoes confinis

What's That Bug? does not endorse extermination