Not all longhorns are wood eaters; some adult longhorn beetles also feed on flowers, like bees and wasps. The spotted longhorn beetle is one of them.
When it comes to elegant beetles, the Spotted Longhorn is definitely one of the most popular ones that you can come across.
Scientifically known as the Rutpela maculata, this beetle belongs to a species that feed on flowers and is known for its unique appearance.
Today, let us tell you about this elegant member of the beetle family.

What Is This Bug?
The longhorn beetle, also called longicorns, is a member of the beetle family. There are 35,000 species of longhorn beetles described in scientific research.
The beetles get their name from their large antennae. These insects often have antennae that are larger than their bodies.
Their bodies are colored in different patterns and spots that can help differentiate one species from another.
What Does It Look Like?
The spotted longhorn beetle derives its name from the typical spots across its body.
They can grow up to 0.5-0.7 inches, with dark-brown heads and abdomen. Their elytra (the hardened endings of the second pair of wings) are yellowish.
There is a pattern of spots or stripes across their bodies. They have long, spiked antennas and live and feed on flowers.
The black and yellow longhorn beetle is more commonly called the Black-spotted longhorn beetle. It looks very much like a wasp.
These beetles use wasp-mimicry as protection against their natural predators. Their bodies give the appearance of the dangerous yellow jackets, whose painful stings are feared by many animals and even humans.

Where Is It Found?
The spotted longhorn beetles are abundant in Europe, mainly in the Near East. If you are looking for these beetles, the best idea is to look at the areas of Austria, Bulgaria, Belgium, Spain, and Slovakia.
Their population will be high in the deciduous areas where they can find longhorn flowers to feed on and live around.
Life Cycle
Spotted Longhorn Beetles have a comparatively long lifecycle that lasts around two to three years.
Majority of their lives are spent in the larval stage, inside rotten wood or dead trees. They are mostly found in deciduous trees like Quercus, Salix, Alnus, and Carpinus, among others.
The adult beetles can be seen during summer, active in the months of May to August. They live only for two to four weeks, laying eggs around hedgerow flowers.
The black-bodied beetles frequent flowers of Apiaceae species, feeding on their nectar and sometimes moving their pollen about as they fly around.
The larvae of these beetles can feed on different kinds of materials, making them polyphagous.

Frequently Asked Questions
Are longhorn beetles harmful?
Spotted longhorn beetles are not poisonous or harmful in any way. They do not cause any trouble for humans since they cannot bite or sting.
Some longhorn beetles such as the asian longhorn beetle are considered pests because they bore tunnels in trees, leaving them hollow.
But in most cases, these insects are not much of a bother.
Are longhorn beetles destructive?
One of the largest long-horned beetles is the Asian longhorned beetle which is considered a destructive creature.
They are wood-boring insects that target maple and pine trees, among other hardwood trees. They can tunnel into their host trees, causing damage to the trees and disrupting nutrition.
How do I identify a longhorn beetle?
As the name suggests, longhorned beetles can be spotted by their large, pointy antenna that can sometimes be longer than their bodies.
There are different patterns for different beetles, depending on what species they belong to.
They can have a yellow body with black spots or white spots on a black body. If you are trying to identify one, look out for the spiny antennae.
How do you get rid of long-horned beetles?
Most types of longhorn beetles are not very harmful to trees or other creatures.
However, certain large species of beetles that can drill into hardwood trees can damage a tree from the inside out.
One effective way to get rid of these insects is to remove the tree or cut out the part that has been damaged.
Wrap Up
Spotted long-horned beetles are some of the most beautiful insects you can find sitting on flowers.
These creatures are not very difficult in deciduous forests around Europe.
And since they are not harmful in any way, you can easily enjoy their silent company, admiring the beauty of nature for a moment.
Thank you for reading!
Reader Emails
Over the years, many of our readers have sent in photographs of spotted longhorns, asking us to identify them.
Sample some of the pics and descriptions below.
Letter 1 – Spotted Longhorn from UK
Unidentified Insect
Location: South East Wales, UK
June 2, 2011 6:22 am
I found this insect in the garden today in Wales (2nd June 2011).
Can you please identify it for me?
Signature: Thank you very much.

In anticipation of a short trip away from the office, we are preparing a series of images to post in our absence. Your letter will go live next week. This is a Longhorn Beetle in the family Cerambycidae, sometimes called the Longicorn Beetles, and we are nearly certain it is Leptura maculata, which we initially identified on the Garden Safari website and verified on the BioLib website where it is called the Spotted Longhorn.
Letter 2 – Spotted Longhorn from France
What is this bug?
Location: Ile de France, France
October 22, 2011 10:31 am
Hello,
I took this picture in july in a meadow and I have yet to figure out what it is.
Thank’s in advance!
Signature: NK

Dear NK,
This is one of the Longhorned Borer Beetles in the family Cerambycidae, commonly called Bycids among entomophiles. We believe it is one of the Flower Longhorns in the subfamily Lepturinae. We hadn’t much hope that we would be able to come up with a species for you, but as luck would have it, we believe we have correctly identified your beetle as Leptura (or the anagrammatical Rutpela) maculata based on this image from the Worldwide Cerambycidae Photo Gallery. According to BioLib, the species is called the Spotted Longhorn.
Letter 1 – Spotted Longhorn from UK
Unidentified Insect
Location: South East Wales, UK
June 2, 2011 6:22 am
I found this insect in the garden today in Wales (2nd June 2011).
Can you please identify it for me?
Signature: Thank you very much.

In anticipation of a short trip away from the office, we are preparing a series of images to post in our absence. Your letter will go live next week. This is a Longhorn Beetle in the family Cerambycidae, sometimes called the Longicorn Beetles, and we are nearly certain it is Leptura maculata, which we initially identified on the Garden Safari website and verified on the BioLib website where it is called the Spotted Longhorn.
Letter 2 – Spotted Longhorn from France
What is this bug?
Location: Ile de France, France
October 22, 2011 10:31 am
Hello,
I took this picture in july in a meadow and I have yet to figure out what it is.
Thank’s in advance!
Signature: NK

Dear NK,
This is one of the Longhorned Borer Beetles in the family Cerambycidae, commonly called Bycids among entomophiles. We believe it is one of the Flower Longhorns in the subfamily Lepturinae. We hadn’t much hope that we would be able to come up with a species for you, but as luck would have it, we believe we have correctly identified your beetle as Leptura (or the anagrammatical Rutpela) maculata based on this image from the Worldwide Cerambycidae Photo Gallery. According to BioLib, the species is called the Spotted Longhorn.
Reader Emails
Over the years, our website, whatsthatbug.com has received hundreds of letters and some interesting images asking us about these insects. Scroll down to have a look at some of them.
Letter 1 – Poinciana Longicorn from Australia


Letter 2 – Unknown Longhorned Orthopteran from Dominican Republic


Letter 3 – Unknown Beautiful Bycid from Costa Rica: Oedudes species


Letter 4 – What Decapitated the Longicorn???? Thus Begins the Speculation of the Meaning of Life as we know it.


Letter 5 – Wattle Chafer from Australia




Letter 6 – Probably Trachyderes succinctus from Virgin Islands




Letter 7 – Cerambycid from Canada is Stenocorus schaumii


Letter 8 – Round Headed Apple Borer


Letter 9 – Round Headed Apple Tree Borer


Letter 10 – Red Headed Beauty from Texas
Subject: Bug inquiry please! Location: Wimberly, Texas September 17, 2013 10:26 pm Hello. My friend found this bug in his horse pen in Wimberly Texas on Sept 18, 2013, probably in the morning about 10 or so. We would just please like to know what it is…anything you can suggest would be helpful and appreciated. 🙂 Thank you Signature: Angela Cox

Letter 11 – Poinciana Longicorn from Australia


19 Comments. Leave new
Thank you for the quick anser on this little guy! I am new to this site (found it through the book) and I think I like it very much already!
Thanks for the positive feedback.
I suggest that it is Oedudes callizona (Bates). The only image of that species on the Web that I could find is of the type which is old and faded but the swtructure and color pattern are the same.
Thanks so much for the identification. We got a second confirmation from another reader on the genus, but not the species. We will attempt to find a link to the photo.
Some are calling Odedudes bifasciatus and others O. bifasciata.
http://www.projectnoah.org/spottings/14397064
http://theearlybirder.com/insects/beetles/longhorn3/pages/197017%20Oedudes%20bifasciatus.htm
Thanks Cesar. We received another comment with the same genus but a different species.
Sorry, Oedudes.
Color may be misleading. Evidently, the coloration of members of Oedudes fades in old specimens. Compare the pictures of a living O. bifasciatus at http://theearlybirder.com/insects/beetles/longhorn3/pages/197017%20Oedudes%20bifasciatus.htm
with the pictures of old syntypes at
http://plant.cdfa.ca.gov/byciddb/details.asp?id=13131
Pattern may be more important and the pattern of O. callizona is a better match.
Thanks for the information and links. We received several comments from our readers on this posting.
We have similar species in the genus Trachyderes and Andraegoidus, both Cerambycinae: Trachyderini, but I can’t diferentiate them:
http://www.insetologia.com.br/2013/06/serra-pau-no-para.html
http://www.insetologia.com.br/2013/04/serra-pau-no-maranhao.html
http://www.insetologia.com.br/2013/02/serra-pau-em-sao-paulo_12.html
I believe it is most like Trachyderes if it is not a third genus.
Thanks Cesar. We agree the Trachyderes looks correct. Cesar, you should consider never taking anyone out of your site. When you have a link, you need to open in a new window so that your site stays open. That will improve your traffic.
Daniel
We have similar species in the genus Trachyderes and Andraegoidus, both Cerambycinae: Trachyderini, but I can’t diferentiate them:
http://www.insetologia.com.br/2013/06/serra-pau-no-para.html
http://www.insetologia.com.br/2013/04/serra-pau-no-maranhao.html
http://www.insetologia.com.br/2013/02/serra-pau-em-sao-paulo_12.html
I believe it is most like Trachyderes if it is not a third genus.
Thank you Dan, my mistake.
If I am not wrong then this a female (females abdomen is wider than males) Stenocorus schaumii.
Thanks Mardikavana,
The images on BugGuide look like a very good match.
Leather wing beetle or soldier beetle?
That thought did cross our mind as well, but we ruled out Soldier Beetles based on some of the features.
Hi there, I do think your website might be having internet browser compatibility problems. When I look at your web site in Safari, it looks fine but when opening in Internet Explorer, it’s got some overlapping issues. I simply wanted to provide you with a quick heads up! Other than that, great site!
Thanks. We have contacted our web master.