Currently viewing the category: "Longhorn Beetles"
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Subject: Wood Borer?
Location: Southern California (Riverside)
March 22, 2015 9:50 am
We found this bug on our picnic table. I think it’s a wood borer of some kind. We live in southern California and there have been infestations of wood borers wreaking havoc in our mountain communities. Curious if this is the same type.
Signature: K. Brown

Longicorn:  Synaphaeta guezi

Longicorn: Synaphaeta guexi

Dear K Brown,
Your Longhorned Borer Beetle is a wood borer in the larval stage, and we believe we have correctly identified it as
Synaphaeta guexi based on images posted to BugGuide, but alas, there is no information particular to the species provided there.  Encyclopedia of Life calls it a Spotted Tree Borer, and iNaturalist indicates:  “the only species in the genus Synaphaeta. It was described by LeConte in 1852.”  As this is a native species, we do not believe it to be the subject of infestation in your community.

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Subject: Flying insect in house. Oklahoma
Location: Oklahoma
March 22, 2015 10:03 am
Have killed about 20 of these in last 2 weeks but don’t know what they are. Please help
Signature: Stacie

Hickory Borer

Hickory Borer

Dear Stacie,
This appears to be a Hickory Borer,
Megacyllene caryae, and you can compare your individual to this image on BugGuide.  Do you have firewood in the house?  Is the wood Hickory?  According to Bugguide:  “larvae mine newly dead hickory, and sometimes other hardwoods.”  Whenever there is a case of numbers of Longhorned Borer Beetles in the family Cerambycidae that are emerging in a home, it is almost always related to firewood.

Sounds good.  Thanks for the info Daniel.

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Subject: Not Identified
Location: Southeast Brazil
March 15, 2015 10:02 am
March 06, 2015 7:32 am
I found this bug on a electric post in front of my house.
3/13/15 at 10:00pm
Signature: J.V.

Harlequin Beetle

Harlequin Beetle

Dear J.V.,
This magnificent Longicorn Beetle is a Harlequin Beetle,
Acrocinus longimanus.

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Subject: Ecuador cloud forest bugs
Location: mindo, ecuador
March 15, 2015 8:39 am
Both of these were found on the same morning in my house.. Any clues as to ID?
Signature: PB



Dear PB,
Now that we have correctly identified your moth, we can concentrate on the Longicorn, a beetle in the family Cerambycidae.  It reminds us greatly of a Longicorn from Barbados we identified as
Chlorida festiva that ranges from Central America to Argentina as well as many islands, but the coloration and pattern of the thorax is different.  We believe we have correctly identified your beetle as another member of the same genus, Chlorida cincta, which we found on the Cerambycidae Genus website.  We located another image on BioLib, and that individual is from Costa Rica.  Chlorida cincta is listed on Cerambycidae de Colombia, so it stands to reason it might also be found in Ecuador.



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Subject: new bug
Location: Bend Oregon
February 21, 2015 11:47 pm
this is a new bug all over my house we were on vacations to Thailand for 2 weeks and the day I got back I notice this bug all over the house, is not in the rooms just in the kitchen and the living room! but in the last two hours I saw 5 of them… please help me
Signature: Marian


Cedar Tree Borer

Hi Marian,
We are requesting assistance from Eric Eaton to help identify your beetle.

Hi Eric,
It looks a bit like a checkered beetle, but the person from Bend Oregon who sent the picture has indicated that significant numbers are appearing inside the home, which makes me wonder if it is a wood borer.

Eric Eaton provides identification:  Cedar Borer
It is indeed a longhorned woodborer, the Cedar Tree Borer, Semanotus ligneus.  Here’s the Bugguide link:
Yes, they are likely emerging from firewood, but potentially from the structure itself, or cedar furniture.  For reasons still unclear, when a beetle larva is trapped inside milled lumber, it frequently extends the life cycle of the larva by years, sometimes decades.  Then, suddenly, beetles are popping out of whatever the lumber was used to build.
Eric Eaton

Hi Again Marian,
Eric Eaton has identified your Cedar Tree Borer, and Bugguide indicates it feeds on “Juniper, Cedar”
in the larval stage.  Since you found significant numbers in the home, we are speculating that wood that was infested with larvae resulted in a mass eclosion or emergence.  Perhaps there was some firewood in the home, or perhaps you bought a recent piece of cedar or juniper furniture made with infested wood.

Daniel and Eric thank you so much! yes there was so firewood (juniper) inside.
Thank you again !

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Subject: Unknown Insect
Location: South Africa, Cape Town
February 20, 2015 1:13 am
Found this interesting insect in my moms garden in Cape Town, Western Cape, South Africa.
It looks similar to a grasshopper but have no idea what it is. Have never seen this before. Hope you can help identify it.
Signature: JC Hanekom

Cape Longhorn

Cape Longhorn

Dear JC Hanekom,
This looks to us like a Cape Longhorn,
Ceroplesis capensis, which is pictured on iSpot, but for some reason, your individual is missing its distinctive long antennae.

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