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

Subject: Unknown Beetle ?
Location: Arizona, United States
April 17, 2014 12:39 pm
This beetle like insect appeared yesterday on my block wall, I went to the other side of the wall and they were in 100′s in a vacant lot with scrub desert brush climbing the wall. Temps were 95ish. They are at least an inch long and very colorful. What is it and is it an issue in my garden?
Signature: Pat Z.

Iron Cross Blister Beetle

Iron Cross Blister Beetle

Hi Pat Z.,
This Iron Cross Blister Beetle in the genus
 Tegrodera is one of the most distinctive looking North American Beetles.  The bright colors of the Iron Cross Blister Beetles are aposomatic, and provide a warning that the beetles are capable of releasing a blistering agent known as cantharadin from their joints, so they should be handled with caution.

Thank you so much, I could not find it anywhere with a picture

What's That Bug? does not endorse extermination

Subject: What IS this thing?!
Location: Memphis, TN
February 14, 2014 5:51 am
I found this crawling on the threshold of my front entrance tonight when I got home from work. I was shocked, because today was our first relatively warm (high above 40) day in about three weeks. So I brought her inside and had my son take some pictures. I thought maybe a queen ant, but figured you all could tell us for sure.
Signature: Editormum

Oil Beetle

Oil Beetle

Dear Editormum,
This impressive creature is an Oil Beetle, one of the Blister Beetles in the genus
Meloe, and you can see BugGuide for additional information.

Oil Beetle

Oil Beetle

What's That Bug? does not endorse extermination

Subject: Unknown Large Black Torpedo-Shaped Insect
Location: Franklin County, TN
November 16, 2013 10:10 pm
Hello-
First off, I love your site! Keep up the great work!
I’m writing for two reasons:
One, I’d love some help identifying the insect in the first two photos. I live in rural southern-middle Tennessee, and I encountered it on my porch, in the evening, on January 11, 2013. Almost a year ago, I know…I kept forgetting to write! Since moving here, I’ve become very familiar with many of our natural neighbors, but I’ve never seen anything like this! My wife and I have a very good relationship with the surrounding wildlife and exercise a no-kill policy 99.9% of the time (red wasps (in the house only) being the exception). There was something about this insect that said ”Do not touch!” Something rather menacing. I thought it was dead at first, but it started moving very slowly while I was photographing it. After taking the pictures, I went inside, and it was gone the next morning. Any help would be greatly appreciated!

Thanks again for your hard work, and hopefully for some help with my shiny black porch insect!
Signature: Laine

Possibly Oil Beetle

Possibly Oil Beetle

Hi Laine,
We are splitting your request into two distinct postings.  We cannot say for certain what the large, black, torpedo shaped insect is, but our initial guess is possibly an Oil Beetle, a type of Blister Beetle in the genus Meloe.  We wish your photo included a view of the head.  See BugGuide to compare additional photos.

Hey Daniel-
Thanks! That’s absolutely what it was. Yeah, not my finest moment as a photographer. Ha! Thanks so much for solving this mystery for me. Just spent 15 minutes reading about oil beetles…fascinating! Thanks again!
Best,
Laine.

What's That Bug? does not endorse extermination

Subject: Large black bug
Location: Southern Ohio
November 7, 2013 8:16 pm
This was on the side of our house. I have lived here all my life and haven’t seen one. Any idea what it is?
Signature: Jennifer F.

Oil Beetle

Oil Beetle

Dear Jennifer,
We often get identification requests for Oil Beetles in the genus
Meloe from your part of the country at this time of the year.  Handle with caution.  Oil Beetles are Blister Beetles and they can exude a compound known as cantharidin which is known to cause blistering in human skin.  It is also the substance found in the aphrodisiac Spanish Fly.

What's That Bug? does not endorse extermination

Subject: Family Meloidae
Location: Kuching, Malaysia
October 23, 2013 7:22 pm
Hello Bugman,
I found this beetle a few years ago (2009?) before I was very interested in entomology. At the time I just thought it looked cool and took a picture. I was on a mission trip in Kuching, Malaysia. Now that I am studying entomology in college I have been more motivated to identify this beetle. I’m thinking that it is in the family Meloidae and the genus Horia. What do you think?
(I am resending this email because I am afraid the last one I sent did not have the picture attached. Sorry.)
Signature: Shiloh

Blister Beetle:  Horia species

Blister Beetle: Horia species

Hi Shiloh,
Our first impression was that this must be a Leaf Beetle in the family Chrysomelidae, but we looked up your suggestion.  The legs on your beetle are quite distinctive, but unfortunately, the photo is not ideal for revealing that feature.  We found a photo of a preserved specimen of
Horia roepkei on Meloidae.com, but we cannot say for certain it is the same species.  There are some wonderful photos on Wikipedia (not our first choice for citing) and they look remarkably like your image.  If we are trusting Wikipedia, then we believe you are correct.  We still wish you had a photo that showed the interesting features of this beetle a little better.  The World of Insects also has a photo that looks similar.

What's That Bug? does not endorse extermination

Subject: Large black beetle looking?
Location: Central New Jersey
October 22, 2013 5:25 am
I’ve seen this bug earlier in the year during summer i believe but just noticed them more and more. I think its the same bug that eats my dogs poop and lives in the ground. Gross! What is it?
Signature: Jimbo

Oil Beetle

Oil Beetle

Hi Jimbo,
This is an Oil Beetle, one of the Blister Beetles in the genus
Meloe.  To the best of our knowledge, they do not eat fecal matter.  We believe you are confusing it with a Dung Beetle.

What's That Bug? does not endorse extermination