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What's That Bug? does not endorse extermination

Cancle or Tailless Whipscorpion from Mexico

What is this insect?
Fri, Feb 20, 2009 at 4:04 PM
We had just put some towels that were drying into our beach bag, when we noticed a long black thread-like thing inside the bag. Upon further review we saw some sort of insect, with long black legs, a brown body like a HUGE grasshopper or beetle, with pincers like a crab. We convinced it to leave the bag, but it was not aggressive in any way. it scared the hell out of my wife who now wonders if there are more, is it dangerous, did it lay eggs???
Jerry & Nora
Zihautenejo, Mexico

Tailless Whipscorpion

Tailless Whipscorpion

Hi Jerry and Nora,
This is a harmless Tailless Whipscorpion, and it is an Arachnid, not an insect.  Tailless Whipscorpions are shy, nocturnal predators, any your specimen was likely just hiding from the sun and heat inside your bag.  In Mexico, there are many superstitions about the Tailless Whipscorpion,  but the rumors that it is dangerous and venomous are not true.  We have had one reader report that the Tailless Whipscorpion is known locally in Mexico as a Cancle, but we cannot verify that in our web research.  We doubt that it laid eggs.

Cucuya or Click Beetle from Ecuador and a Tailless Whipscorpion Too!!!

Beetle from Cloud forest in Ecuadorian Andes
Tue, Feb 10, 2009 at 8:46 PM
We just got back from Milpe in Ecuador (elevation 1500 meters) and came across this beautiful beetle. Can you ID?
BTW. We saw an almost identical Scorpion bug in the Amazon as the one noted in Thailand. I am attaching pic. Amazing how they can be found in areas so far away from each other.
Mtnchk
Milpe Ecuador

Buprestid? or Elaterid?

Click Beetle: genus Semiotus

Dear Mtnchk,
We not be able to ever get you a definitive species identification on your beetle, but first we need to start with the family. We are not sure if your beetle is a Jewel Beetle (AKA Metallic Wood Boring Beetle) in the family Buprestidae, or a Click Beetle in the family Elateridae. Our first thought was a Buprestid because of the coloration, but the thoracic area has us inclined to speculate that this is an Elaterid. Click Beetles get their common name from their ability to snap their bodies at the junction of the thorax and abdomen. If the beetle finds itself on its back, this ability allows it to right itself by snapping its body against the hard ground, propelling the beetle high into the air and producing an audible clicking sound. Most North American Click Beetles are drab in coloration, but some tropical species are brightly colored. We hope one of our expert contributors will be able to at least narrow the family and perhaps identify the species.

Tailless Whipscorpion

Tailless Whipscorpion

Also, thanks for including your Ecuadorean example of a Tailless Whipscorpion.

Update: from Eric Eaton
Hi, Daniel:
It is indeed a click beetle, in the genus Semiotus. The whole genus is quite colorful!
Eric

Dear Daniel,
This is fantastic. I really appreciate your quick and thorough response. What a great website you have and I have actually given you a very positive rating as a new website for “Stumble upon” where I was when I came upon your website. I hope this gives you many more hits which lead to some financial gains- you certainly deserve it!
Mtnchk (Rebecca

Update:
Hi Daniel
It goes by the common name ‘Cucuya’ in Ecuador and it is a click beetle (family Elateridae); probably Semiotus illigeri. It occurs in Costa Rica, Panama, Columbia and Ecuador. Semiotus is a large neotropical genus with 31 representatives in Ecuador. Images are hard to find but the ‘Natural History Museum of Los Angeles’ has posted a report on the genus that includes numerous distribution maps and excellent color plates (look for Figure 227). Regards.
Karl
http://www.nhm.org/research/publications/Contributions_in_Science/CS514.pdf

Tailless Whipscorpion from Thailand

a bug found in Middle of Thailand.
Tue, Feb 10, 2009 at 3:36 AM
we found this bug in a cave in the Middle of Thailand. It walks as the crab, and has 4 pairs of legs and 1 pair of pliers.
the of the bug is about 15cm in width and 10cm in length.
more detail in the image.
Hans Ngo – www.bikechina.org – The Ghost Rider Team
A bat cave in middle of Thailand.

Tailless Whipscorpion

Tailless Whipscorpion

Hi Hans,
We have gotten photos of harmless Tailless Whipscorpions from many places around the world. These are shy nocturnal hunters that are totally harmless since they lack venom.

What's That Bug? does not endorse extermination

Tailless Whipscorpion from Mexico

what´s this?
Mon, Jan 12, 2009 at 12:18 PM
is this a spyder?, what is it. Dangerous???, found under a pyle of stuff
gabriel
mexico

Tailless Whipscorpion

Tailless Whipscorpion

Hola Gabriel,
We never tire of posting images of the harmless, shy, nocturnal, predatory Tailless Whipscorpion.  They are Arachnids, but not spiders.

Tailless Whipscorpion

Costa Rican spider
Sat, Dec 6, 2008 at 5:55 PM
Costa Rican spider
We recently visited the Nicoya Peninsula of Costa Rica, and came across this spider on the back of a building at the Cerro Escondido eco-lodge (up a rocky path from Montana Grande in the Karen Mogensen Reserve). I’m curious to find out what it is, because it looks like a mix-mash of everything.
Deborah Dearth
Nicoya Peninsula, Costa Rica

Tailless Whipscorpion

Tailless Whipscorpion

Hi Deborah,
This is a harmless Tailless Whipscorpion, a shy nocturnal predator.

Tailless Whipscorpion in Virgin Islands

Tailless Whipscorpion British Virgin Islands
Mon, Nov 24, 2008 at 10:16 AM
This Tailless Whipscorpion photo was taken in Tortola, British Virgin Islands, about 10pm on Feb 3 2008. It had been moving back and forth to alternate sides of the wood door as I tried to see it better using a flashlight, and it seems to have gotten used to me as it allowed my hand to get pretty close. The flash must have scared it away because it took off when the photo was taken – they can move really fast! Is that a single eye in the middle of its front top? That seems an unusual place for an eye. (BTW I think it is only fair to make a donation when submitting a photo or question, so I made a PayPal contribution to you, watch for confirmation # 9 edited for privacy)
RD
North side of Tortola, British Virgin Islands

Tailless Whipscorpion

Tailless Whipscorpion

Hi RD,
We were very happy to receive your letter since the last Tailless Whipscorpion submission we received was asphyxiated with insecticide.  Tailless Whipscorpions can scuttle sideways in a crablike fashion very quickly.  According to BugGuide, Tailless Whipscorpions have eight eyes.  You can also find some interesting information on the About Everything website.  Thanks for your kind contribution.

Exterminated Harmless Tailless Whipscorpion in Trinidad

brown beetle/spider?
Fri, Nov 21, 2008 at 8:54 AM
Hi,
Cleaning out my back storeroom, I came across this insect. I got so scared, I emptied half a tin of insecticide on it before it died. It has six long legs, two large mandibles at front and two very long antennae. It’s black with brown spots/stripes and its body is about 1-1.5 inches in length.
Cheers
shurland
Trinidad, West Indies

Exterminated Tailless Whipscorpion in Trinidad

Exterminated Tailless Whipscorpion in Trinidad

Hi shurland,
Tailless Whipscorpions are fierce looking, but they are totally harmless unless you are a small Arthropod or other creature that becomes prey to this shy nocturnal hunter.  We haven’t posted an image to our Unnecessary Carnage page, so we will be posting your letter and image.

Giant Vinegaroon

Scorpion like bug in New Mexico
Attached is a photo of a rather large and intimidating “bug”. It has claws like a scorpion, but not the curved tail with the stinger. Instead it has that long thin wiry tail. The tail actually looks like a long piece of wire of stiff hair. Can you tell us what it is? Is it poisonous or harmful to humans? Does it eat other insects? Thanks.
Monte and Mary Kern

Hi Monte and Mary,
This is a harmless Whipscorpion, Mastigoproctus giganteus, also called a Giant Vinegaroon or Grampus. Legend has it that the bite of a Vinegaroon will cause the person to taste vinegar for weeks. Though this is untrue, BugGuide notes that “Although its tail in unable to sting, this creature can spray an acidic mist from a scent gland at the base of the tail when disturbed. The spray is 85% concentrated acetic acid/vinegar, hence the common name “Vinegaroon.” The heavy pinching mouthparts (modified pedipalps) can also inflict a painful bite. Although very unlikely to attack humans, it can certainly defend itself if provoked.” The Vinegaroon is a nocturnal predator with poor eyesight. It feeds on insects, other arthropods, and also, probably, small vertebrates like lizards.

Whipscorpion from Indonesia

spider or scorpion?
I’m from indonesia, and i want to ask about the bug that i hv found. Its interesting me when the first i saw it, its likes a spider, and has a needle in the back of its tail, has 2 claws, 6 legs, and 1 pair antenna. Can you tell me what is it? Class of spider or scopion? And Sorry bout my bad english. I think i hv found a new bug!!

This is a harmless Whipscorpion, and it is magnificent.

Tailless Whipscorpion from Cambodia

South East Asian Bug
Hey Bugman,
I saw this bug in June in Cambodia. It was by the temples of Angkor. My guide said he had never seen a bug like that in all his years. What is it and is it rare? Thanks,
Jon

Hi Jon,
Harmless Tailless Whipscorpions are found in many parts of the world. We have received photos from Africa, Asia, Central America, Mexico and the Southwest United States. They are shy nocturnal hunters, which explains why they are not often encountered.

Tailless Whipscorpion

whats that bug
I was rudely awoken one night by this crawling across my face…. i have no idea what it is can you identify it for me please

This is a harmless Tailless Whipscorpion. In the U.S. these shy predators can be found in Arizona, Texas and Florida, but most of our reports come from tropical countries. Sadly, you did not provide a location.

Tailless Whipscorpion from Ecuador

bug identification request
Hi Daniel,
Thank you for the previous identification. When searching for swallow-tailed moth (which looks much different than a swallowtail moth), I came across hits for swallowtail butterflies, but I didn’t think to also search under swallowtail moth. I have one more id request from Yasuni National Park. We saw what appears to be a spider in the attached picture while doing a nightwalk. Looking on your site, it resembles a tailless whipscorpion. Is that correct? Thanks,
Oliver

Hi Oliver,
You are correct. This fierce looking creature is a harmless Tailless Whipscorpion.

Tailless Whipscorpion

Whats this?
Hello, my name is Kevin and I’m working in Nicaragua and came across this interesting bug, which appeared to be some sort of spider. I examined it under a microscope and it has fangs like a spider and two mandible like appendages. Have any Ideas?
Kevin L. Miller

Hi Kevin,
Though it might look fierce, the Tailless Whipscorpion is a harmless predator.

Tailless Whipscorpion

Tailless Whipscorpion from Chamela, Mexico
Hi.
After searching the web to find out what bug I saw the other night I came across your site that had good pictures of the Tailless Whipscorpion and that made me pretty sure that what I saw was just that. The thing that confuses me is that the locals say that it’s poisonous. A girl at the house where I live told me that she got bitten three years ago. It had hidden in her shorts and when she put them on it bit her. If you get stung you will loose your vision and sense of hearing. If you don’t get and antidote within 30 minutes you will die. Since you say it’s harmless I guess it must have been something else that bitten her. What could that be that kill you in 30 minutes and disables your eyes and hearing? I attached a picture of the Tailless Whipscorpion for your site. Best Regards
Niclas Skold

Hi Niclas,
While we were in Iscamilpa Mexico for the total solar eclipse, we were amused by a sign outside the church warning the locals to stay indoors because scorpions would fall from the sky. While there are many poisonous creatures in Mexico that will sting and bite, the Tailless Whipscorpion is not one. Their fierce appearance belies their harmlessness.

Giant Vinegarone

What bug do I have?
I found this bug outside of my house on my porch right after a rain storm on 10/4/07. I live in New Mexico at about 5500ft on the plains west of the Sandia Mountains in central New Mexico. The body is like a beetle, but it has pinchers like a scorpion. The tail is about 2 inches long, and appears to act like an antenna of sorts but does not appear to be a stinger. It gives off an awful and irritant smell that hurts the eyes and throat. This thing is freaky and looks like a cross breed of a scorpion and a beetle. The picture does not illustrate its size. It is about 3 inches long. Please let us know, if you are familiar with what it is.
Zachary Grant

Hi Zachary,
This Whipscorpion is commonly called a Vinegarone, or Grampus in the South. It is a harmless relative of scorpions and it gets the name Vinegarone because of the vinegar scented acid they release from a gland near the tail. They are shy nocturnal hunters that are seldom encountered.

Whipscorpion from Thailand

Rescuing fish…!
Hello guys from a big fan ! Yes, a big hoorah for the best bug site on the net. Even though it’s largely New World orientated, the photos, the philosophy, the humour..oh, and the scientific accuracy are all first class, and searches usually point me in the right direction for Eurpoean and Asian examples, although you do deservedly have a world-wide audience. I’m glad to hear that you,ve been swamped over the summer because it means that people are out there are getting interested in the amazing variety to be found in the insect world, and also know the right people to contact with their discoveries. However, your popularity has prevented me from consulting your oracle during the summer, as I didn’t want to overburden you with my footling little problem, but ……ooh, I can’t contain my curiosity any longer. I spotted this little beauty on the 29th of May this year, and after looking all over the place, still can’t even work out if it’s an insect or a spider, or even something more resembling a prawn ! An interesting little story is behind my unearthing of ” Jaws ” , though, so here goes… On that day, I was staying at the house of friends in Rayong, Thailand, and it was an unbelievably hot morning, which built up to one of the many thunderstorms which we’d been having in the afternoons and evenings at the time. This time, though, we had a near-apocalyptic tropical downpour ( as opposed to a normal tropical downpour ), and water was just cascading off the roof in all directions, as the guttering was completely overwhelmed. At one point there came a great crash from the front yard which didn’t sound as if it came from the heavens, so we all peered out the front door to see what had happened. What we found was that a section of guttering at the front of the house had given way under the pressure of water and crashed down into the front yard on top of a huge, three-foot high earthenware bowl, which was, as is usual in Thai gardens, full of water lilies and fish. The huge pot shattered, of course, and the hapless fish were spewed out all over the already waterlogged front yard, flapping about and in imminent danger of being washed away, so we had to grab pans from the kitchen and run out into the cloudburst to try and scoop them up !! In the middle of the rescue operation, I found this very unfishlike thing floundering around as well, so scooped it up as well. Its body ( jaws head,thorax, abdomen ) is about the same length as my little finger, though obviously not so thick. I’m afraid it’s not such a good photo, and I’ll give the circumstances as my excuse, but it seems to have eight legs, although the extra ones may not be legs.. Also, it has a long “sting ” on it’s abdomen, at least the same length as the abdomen itself, possibly an ovipositor. Originally I had assumed that it had come out of the water jar along with the fish, and was therefore aquatic, but it’s posssible that it was just hanging around in the yard and got caught up in the all-pervading wetness !! My first thought was that it was a dragonfly nymph, quickly discounted, and then maybe a water-scorpion, but it doesn’t quite match that either, and I’m still not sure if it’s an insect or an arachnid, so……HELP !!! ( I let it go pretty quickly, as I didn’t fancy a nip from those mandibles, and yes, the fish are all doing fine !! )……Cheers
Graham Moore, Purmerend, Netherlands……..and quite often Rayong, Thailand.

Hi Graham,
This is a Whipscorpion. We found a near exact match on a crazy blog entitled Wesley in Thailand. We also posted another similar example from Thailand last year that met a nasty fate when it was discovered. Sorry we can’t provide an exact species.

Vinegarone

Whiptail Scorpion
Thought you might enjoy these pictures of a whiptail scorpion. They are fascinating and nasty looking bugs. And yes, they will shoot vinegar smelling stuff at you, I got it all over my hand while taking these pictures. Love your site!
Samantha D.

Hi Samantha,
Thank you for providing us with a first hand account of the reason the Whipscorpion is also known as a Vinegarone. Now if only we can determine the reason for the other common name: Grampus.

Camel Spider, Scorpion and Borer Beetle handled by Jesse in Iraq

Hi…



Heres a few pics of my many legged friends from iraq….your site rocks…thanks
Jesse Lopez

scorpion Wood Boring Beetle

Hi Jesse,
Thanks for sending us photos of the creatures you are handling in Iraq. It is nice to see you don’t believe the vicious rumors regarding the Camel Spider or Solpugid. We don’t know much about the Scorpion you are holding, but scorpions are venomous. Only a few species have potentially lethal venom and most are like being stung by a wasp or bee. The large beetle is a Metallic Wood Borer in the family Buprestidae. Stay safe.

Camel Spider, Scorpion and Borer Beetle handled by Jesse in Iraq

Hi…

Heres a few pics of my many legged friends from iraq….your site rocks…thanks
Jesse Lopez

scorpion Wood Boring Beetle

Hi Jesse,
Thanks for sending us photos of the creatures you are handling in Iraq. It is nice to see you don’t believe the vicious rumors regarding the Camel Spider or Solpugid. We don’t know much about the Scorpion you are holding, but scorpions are venomous. Only a few species have potentially lethal venom and most are like being stung by a wasp or bee. The large beetle is a Metallic Wood Borer in the family Buprestidae. Stay safe.

Vinegaroon from Mexico

What a hell is this!!
Hello! Im Arturo Christhian from Monterrey, Mexico. Last day there was a big rain, and in the next day we discover this bug in our house! What is it! We never seen something like that before J Love your website! Greetings!
Arturo

Hi There Arturo,
This is the first letter we are answering since returning to the office. This is a Vinegaroon, a non-poisonous relative of the scorpions. It is harmless unless you are a small arthropod. Vinegaroons are Whipscorpions in the family Thelyphonidae, and we believe this specimen is in the genus Mastigoproctus.