Currently viewing the category: "Longhorn Beetles"
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Subject: Unknown Insect! :D
Location: Binnaguri,West Bengal
April 15, 2014 3:42 am
It was attracted to the lights……though i dn’t knw if it’s a beetle or something else!
Signature: Martin

Mango Stem Borer

Mango Stem Borer

Hi Martin,
This appears to be a Mango Stem Borer,
Batocera rufomaculata, a species that is considered a serious agricultural pest of mangos, figs and several other commercially grown trees.  According to Carnivora, the hosts include:  “edible fig, mango, guava, jackfruit, pomegranate, apple, rubber, and walnut. In India recorded for more than 30 different host plants.”  When crops are grown commercially, there is not much diversity in the field, and when food supplies are plentiful, species that feed on those plants also proliferate.  In a forest where trees are rarely homogenous and where natural predators are also present, the balance of nature keeps things under control.  Modern agricultural methods, with large swathes of land devoted to growing a single crop, create an ecosystem that is out of balance.  This individual may have been attracted to the lights in your home.

Mango Stem Borer

Mango Stem Borer

 

 

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Subject: Not a clue!
Location: Derbyshire, England
April 4, 2014 11:06 am
Hi,
Please could you help me identify this creature? I’ve been scrolling through photos for hours and had no luck. I’m afraid I’m completely ignorant with insects so I can’t even narrow my search.
I’ve found two of these in a Derbyshire bedroom at separate times over the last couple of weeks. I never seen them before, or anything similar, so I would like to know what they are if we’re sharing space.
I’m afraid I haven’t observed any useful behaviours, I just have this photo.
Thankyou for any help.
Signature: Rose

Longhorned Borer Beetle

Longhorned Borer Beetle is Placosternus species

Hi Rose,
This is a Longhorned Borer Beetle in the family Cerambycidae, but we have not had any luck identifying the species.  It is not listed on Mark Telfer’s Longhorn Beetles page, nor on Eakring Birds.  Did you get any new furniture in the room where you have found the beetles?  We don’t want to be alarmist, but it is possible they emerged from the wood used in a new piece of furniture.  We will continue trying to identify the species.

Hi,
There is a wooden bowl my brother bought back from Belize. Looking at it I can see three holes, two have dust around them and one looks like there is something still in it.
As it’s likely these beetles are foreign to my ecosystem, is there some precaution I should take?
Thank you so much for your speedy reply!
Rose.

Hi again Daniel,
I’ve just been in touch with my brother and he says it is a rosewood bowl bought in Placencia Belize that we think it has come from. Hope that can help with the identification?
Thanks again for all your help.
Rose

Hi Rose,
We believe you probably found the source of the introduction of these Longhorned Borers with the discovery of the wooden bowl and its holes.  Many invasive species have been introduced in this manner to various parts of the world, however, we don’t think you need to fear that this tropical species will survive in your much colder English climate.  We will see if we can find a match among species from Belize, though nearby Costa Rica shares many of the same species and there is more comprehensive data on Costa Rican species on the internet because of the ecotourism.

Additional Information and Identification courtesy of Karl
Hi Daniel and Rose:
It looks like a species of Placosternus (Cerambycidae: Cerambycinae: Clytini) which includes the familiar Mesquite Borer (P. difficilis) that occurs as far north as the southern USA , and south to Honduras. There are four species of Placosternus altogether, all of which can be found in Belize, look very similar and include neotropical rosewoods as larval host plants. The adult coloration suggests that they may be wasp mimics. The commonly used rosewood species in Belize is the Honduras Rosewood (Dalbergia stevensoni). FYI, this species has long been a staple in the Belizian artisanal tourist industry (full disclosure – we also bought a few beautiful rosewood bowls in Belize a few years ago), but unfortunately, a massive increase in the harvest in recent years to feed Asian demand has caused concern and the Belizian government has recently implemented a ban on the harvest and export of rosewood. I am not sure if this includes the small-scale production and sale of carved products for the tourist trade. If so, this would be a serious and unfortunate hit on an important village-based income source. Regards. Karl

Thanks for doing this research Karl.  We did notice the resemblance to the Mesquite Borer when we wrote the original identification, and we tried searching its tribe in England to see if there were any relatives.

Hi Karl and Daniel,
Thank you very much for solving the mystery! Thanks for all your time and effort.
Kindest regards,
Rose

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Subject: Stripes & only 4 legs – what is it?
Location: South Orange, NJ
March 30, 2014 12:08 pm
Just found this guy crawling up my LR window & escorted him (or her) outside. The torso is about 1″.
Haven’t seen this before. Any idea what it is?
Signature: Thanks! Lory

Red Headed Ash Borer

Red Headed Ash Borer

Dear Lory,
This is a Red Headed Ash Borer, a beetle with a larva that bores in the wood of ash and other trees.  When we get reports of Red Headed Ash Borers indoors, especially in the winter, we ask if the querant has firewood indoors, as the adults will emerge prematurely from the wood infested with larvae if the indoor temperatures expedite the maturing process.
  Red Headed Ash Borer have six legs like other insects, and you can see a fifth leg on the left side of your image near the head.  The sixth leg might be missing or just hidden from view.  Red Headed Ash Borers are thought to mimic stinging wasps as a form of protective mimicry since the beetles do not sting.

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Subject: What type of longhorn beetle is this
Location: Northern California
March 26, 2014 10:30 pm
Snapped this pic while feeding the horses. Near a creek with mostly cottonwoods and willows. Located about 80 miles North of Sacramento CA. No one around here seems to know what it is…I’ve never seen one either.
Signature: Susan

Synaphaeta guexi

Synaphaeta guexi

Hi Susan,
Your Longicorn is
Synaphaeta guexi, and we get one or two requests each year from California to identify this lovely beetle.

Thank you so much for your reply!  I too thought it very beautiful.
Susan

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Subject: Have never seen a beetle like this here before
Location: Shreveport, la
March 25, 2014 8:07 am
1 1/4″ body green with two yellow spots on back. Found this bug outside of my apartment in Louisiana.
Signature: J A Bendish

Longicorn

Banded Hickory Borer

Dear J A Bendish,
You have attached a photo of a Longhorned Borer Beetle or Longicorn in the family Cerambycidae, and we will attempt to identify the species for you.  Our confusion is that the brown beetle in the photo does not match your description of “body green with two yellow spots on back” and we are wondering if perhaps you attached the wrong image.

Eric Eaton provides an identification
Hi, Daniel:
Nice beetle!  It is probably the Banded Hickory Borer, Knulliana cincta, which sometimes lacks the “bands.”  Here’s more:
http://bugguide.net/node/view/6804
It emerges early, too, so that puts it at the top of the suspect list.
Eric

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Subject: Straight out of a Tim Burton movie!
Location: Inland Empire, Southern Caifornia
March 23, 2014 12:24 pm
Ok, so i found this crazy looking bug one day. It was just sitting on the door of a store. It was late June of last year in Southern California. There are some fields close to this shop. Please help me identify this! It still haunts my nightmares!
Signature: Christy

Banded Alder Borer

Banded Alder Borer

Hi Christy,
The Banded Alder Borer,
Rosalia funebris, is sometimes called the California Laurel Borer.

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