Currently viewing the category: "Longhorn Beetles"

Subject:  What is this?
Geographic location of the bug:  Winston-Salem, NC
Date: 09/06/2019
Time: 03:11 AM EDT
Your letter to the bugman:  These photos were taken on 07/31/19 in the parking lot of a suburban park. The body of the insect shown was about 1 inch long.
How you want your letter signed:  Amanda T.

Longicorn:  Neoclytus mucronatus

Dear Amanda,
This is a Longicorn or Longhorned Borer Beetle in the genus
Neoclytus, and it has no common name.  We believe we have correctly identified it as Neoclytus mucronatus thanks to this image on BugGuide.  It is one of the species that mimics a stinging wasp like a Paper Wasp for protection as the beetle does not sting, but potential predators are put off by the warning colors.

Longicorn: Neoclytus mucronatus

Thanks for the swift response! I’m glad you were able to ID this for me. The markings on the wing casings kept me from seeing that it was any kind of beetle. I guess mimicry works to fool amateur entomologists too.

Subject:  invasive Longhorn beetle or native?
Geographic location of the bug:  South Texas
Date: 08/26/2019
Time: 12:42 AM EDT
Your letter to the bugman:  Found this beetle and i was wondering what kind is it and if it is native of Texas
How you want your letter signed:  Gabe

Flat Faced Longhorn is Neoptychodes trilineatus

Hi Gabe,
Your images are quite artful.  This is a Round Headed Apple Borer, a native to North America.  According to the Michigan State University Integrated Pest Management System:  “Attack apples mainly, but most deciduous tree fruits are susceptible. The larvae dig tunnels, most often at the base of the tree trunk. The roundheaded borer leaves accumulations of reddish frass at the entrance of galleries. Infested trees have a sickly appearance, producing sparse, pale-colored foliage (C). Continued yearly attacks can kill the tree or weaken it so that it is broken off by the wind. Young trees that have been girdled will often bloom profusely and set a heavy crop of fruit and then die in the process of bringing it to maturity.”

Neoptychodes trilineatus

Correction: Neoptychodes trilineatus
We just received a comment from Brady Richards correcting this misidentification.  According to BugGuide:  “Although Ficus is the primary host, larvae also develop in Alnus, Morus, Salix, Celtis. ”

Neoptychodes trilineatus

Subject:  Bug Mimics Wasp Colours
Geographic location of the bug:  Ontario, Canada
Date: 08/25/2019
Time: 11:16 PM EDT
Your letter to the bugman:  Just curious to know what this is.  I couldn’t find anything online with the same markings.
How you want your letter signed:  Melissa

Sugar Maple Borer

Dear Melissa,
This gorgeous beetle is a Sugar Maple Borer, and it is a very effective mimic of Yellowjackets.  Sugar Maple Borers have become increasingly rare in recent years, so your sighting is significant.

Sugar Maple Borer

Subject:  Lion beetle
Geographic location of the bug:  Bremerton Washington
Date: 08/25/2019
Time: 12:48 PM EDT
Your letter to the bugman:  Was trying to figure out what it was but your site helped with that. Thanks.
How you want your letter signed:  JbTv

Lion Beetle

Dear JbTv,
Thanks so much for submitting your excellent images of a Lion Beetle, even though you did not require an identification.  We are happy to learn our site was helpful to you.  What we especially like about your Lion Beetle images is that the individual has curled up its abdomen into what is commonly regarded as a threat position that would be assumed by a stinging insect, and which we frequently see in Rove Beetles like the Devil’s Coach Horse.  This posture is especially effective in insects that mimic stinging insects, like your Lion Beetle.

Lion Beetle

Subject:  who is he little monster
Geographic location of the bug:  Araraquara-São Paulo, Brazil
Date: 08/19/2019
Time: 09:51 AM EDT
Your letter to the bugman:  Hi, I would like to identify these beetles, they were very big sizes about 10+ centimeters. People here are afraid of them and call them “big cockroach”.
Nearby there are eucalyptus trees and lots of sugar cane.
I would like to know if they are rare, because these photos are from November 2018 and since then I have not seen any more here (the first beetle is slightly smaller than the second).
The first question is: are they dangerous?
What is his life time? what does he feed on? and how is his larval state?
How you want your letter signed:  Kainã

Root Borer

Dear Kainã,
This is one of the Root Borers in the subfamily Prioninae, and it looks similar to
Ctenoscelis ater which is pictured on Coleoptera Neotropical, but there is no information on the site regarding this beetle’s life cycle.  There is an image but no information on Prioninae of the World.  There is one sighting on iNaturalist.

Root Borer

Subject:  Brown and orange beetle?
Geographic location of the bug:  Pearland tx
Date: 08/13/2019
Time: 09:18 AM EDT
Your letter to the bugman:  I saw this cool bug on the window but can’t figure out what it is. Can you help?
How you want your letter signed:  Thanks, Sarah

Longjawed Longhorn

Dear Sarah,
This beautiful beetle is a Longjawed Longhorn,
Trachyderes mandibularis, and according to BugGuide:  “Hosts: Citrus, Parkinsonia, Salix, Celtis (Hovore et al. 1987).”