Currently viewing the category: "Longhorn Beetles"

Subject: Unknown beetle
Location: Avalon Pinensula of Newfoundland
July 30, 2012 7:24 am
My friend found this over the weekend and was wondering what type of beetle it is. When she found it she said it looked to be borrowing through some wood. I think she is afraid of any damage that it may cause.
Signature: Curious Friend.

Red Shouldered Pine Borer

Dear Curious Friend,
Using BugGuide, we identified this Longhorned Borer Beetle as a Red Shouldered Pine Borer,
Stictoleptura canadensis, and it is one of the Flower Longhorns in the subfamily Lepturinae.   Adults feed on nectar and pollen and the larvae are wood borers.  Your friend does not need to worry about damage to her home.  According to the family page on BugGuide:  “Most species feed within dead, dying or even decaying wood, but some taxa can use living plant tissue.”

Subject: Large flying beetle
Location: Somerset Kentucky
July 27, 2012 11:57 pm
So my friend posts this picture of a beetle that was in hot pursuit of her and that she killed with a fly swatter. She said it made a busy noise and as you can see from the picture it has long feather like antennae and pincers. To me it looks like half moth half beetle. Identifying it would be a great help.
Signature: Egads!

Tile Horned Prionus Carnage

Dear Egads!,
This magnificent beetle is a Tile Horned Prionus, a male judging by the antennae.  The larvae feed on rotting wood, especially roots and males are frequently attracted to lights, which is most likely how this individual found itself indoors and the victim of Unnecessary Carnage.  Alas, because of their large size, Tile Horned Prionus are frequently killed unnecessarily.

Subject: What is this critter?
Location: Peoria Arizona
July 25, 2012 9:11 pm
This is not the first time I have seen critters this large. I just would like to know what it is called other than a big black bug.
It is just standing on a standard sized brick so it is a good 3 to 4 inches in length.
Signature: Just wondering

Palo Verde Root Borer

This impressive Longhorned Borer Beetle is the Palo Verde Root Borer, Derobrachus hoverei.  We get numerous identification requests each summer, usually from Arizona but also from other states in the southwest where the host plant, palo verde is grown.  Summer is the time when adults emerge and seek mates.  See BugGuide for additional information.

Subject: what’s this insect?
Location: downtown Chico, CA
July 13, 2012 1:09 pm
I took this photo outside of the B of A downtown in Chico, CA yesterday. 7-12-12. It seemed out of place, had mouth Pincers.
It was very hot on the concrete…stayed to the shade. Started to mobilize wings once, but didn’t fly.
Looks like a beautiful piece of art…my husband called it the ”tiger beetle”. Is it poisonous/bad for the environment here? What is it’s normal environment?
Signature: Elizabeth Devereaux

Banded Alder Borer

Hello Elizabeth,
Even though we just posted another photo of a Banded Alder Borer, we think it is such a beautiful beetle we are posting your photo as well.  Larvae are borers in dead wood, but not processed or milled wood, so they are not considered harmful.  You can find additional information on this lovely Longhorned Borer Family member by reading what is posted on Bugguide.


Subject: need identification
Location: santa rosa, ca
July 13, 2012 12:05 am
Love to know what this bug is..
Signature: marion

Banded Alder Borer

Hi Marion,
While it might not be appropriate for the staff of What’s That Bug? to have favorites, the Banded Alder Borer,
Rosalia funebris, in your photograph is probably our favorite North American Beetle.  The Banded Alder Borer is found in the western states from California to Washington, into Canada.  BugGuide also has reports from Idaho and Utah.

Thank you so much for your quick reply.  We are so impressed with this bug. The one you see the photo of is the male.
A few minutes later another larger one appeared, which turned out to be the female.  The smaller one reacted instantly by mating the with larger beetle.  Thank you again.
Marion and Kent

Hi Marion and Kent,
You are such teasers to tell us that information and then not send a photo.  It is also very curious that the female found the male.  It is generally believed that female insects release pheromones and males are attracted to the “scent” of the females by using their more developed antennae.  Sometimes both sexes are attracted to other scents or to food supplies and mating takes place at a jointly attractive location.  Charles Hogue writes in Insects of the Los Angeles Basin:  “Adults may be attracted to the volatilizing esters in fresh paint.”  We hope you took a photo of the mating activity that you can send to us.