Currently viewing the category: "Longhorn Beetles"
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Subject: Prionus Californicus in Tennessee?
Location: White County, Tennessee
June 20, 2016 11:10 am
I photographed this creature on my porch rail last night and posted it on IG in order to get feedback. Two people suggested it was a Prionus Californicus and gave me references. I’m pretty sure it IS one but what is it doing in Tennessee? With all of our nursery stock, I wonder if they’re plentiful here, have they been here a long while, how WE have come to have them, and are our nurserymen aware of them? I’m from Warren County, but this bug was found up at our river front property in Neighboring White County.
Thanks so much!
Signature: Peggy S Thompson

Tile Horned Prionus

Tile Horned Prionus

Dear Peggy,
This is indeed
Prionus, but it is NOT P. californicus.  In scientific nomenclature, the capitalized first word in the binomial name is the genus, and the second lower case word is the species.  The members of the genus are closely related and often share physical attributes, and frequently they can be difficult to distinguish from one another.  According to BugGuide, there are 16 North American species in the genus, and Prionus californicus is found as far east as Texas, according to BugGuide.  Your relative is the Tile Horned Prionus, Prionus imbricornis, and its range is according to BugGuide, partially overlaps that of the California Root Borer, and includes Tennessee.  The impressive antennae on your individual indicates he is a male.  This is the third Tile Horned Prionus we have posted this week, though the first was a disembodied head.   

Daniel,
Thanks so much for such a quick reply, ID, and also for posting my “Tile Horned Prionus” online for others to see. I had several people interested in him and his “Yosamitty Sam” antennas! Now WE know him…
Peggy T.

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Subject: Strange beetle with feather-like antennae.
Location: Tallahassee, FL
June 20, 2016 7:31 am
Hello,
My father ran across this beetle n June 19th is Tallahassee, FL and we were wondering what kind it might be.
Signature: David Robinson

Tile Horned Prionus

Tile Horned Prionus

Hi David,
Now that summer is upon us, we are beginning to receive submissions of Root Borers from the genus
Prionus as well as other large Prionids.  There are different species from different parts of the country, and your individual is a male Tile Horned Prionus, Prionus imbricornis.  The species is described on BugGuide as:  “Huge longhorn, dark brown and shining. Antennae have 18-20 overlapping segments (male):  Female has 16-18 serrated segments. Other eastern Prionus have 12-13 antennal segments.”  Earlier in the week we posted this arresting image of the decapitated head of a male Tile Horned Prionus.

Tile Horned Prionus

Tile Horned Prionus

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Subject: Soldier Beetle?
Location: Southwestern CT
June 13, 2016 11:10 am
This beetle is feeding on the flowers of Bishop’s Weed (agapotum). It is not chewing the petals but appears to be searching for tiny insects.
Is it some kind of soldier beetle?
Signature: Susan in CT

Flower Longhorn: Trigonarthris proxima

Flower Longhorn: Trigonarthris proxima

Dear Susan in CT,
This is NOT a Soldier Beetle, and we believe we have correctly identified your Flower Longhorn as
Trigonarthris proxima thanks to images posted to BugGuide.  Of the genus, BugGuide notes:  “Adults take nectar and/or pollen at flowers.”  This is a new species for our site.

Thank you so much for your quick response.  The coloring wasn’t quite right for the soldier beetle but I didn’t know what else it could be.  Will look up Flower Longhorn.
I only saw one of them on one afternoon.  It hasn’t returned.
Susan

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Subject: Help please! :3
Location: NC
June 14, 2016 3:20 pm
I love entomology and have recently identified many buggys! Including a eastren hercules beetle! But this guy has me stumped!!! He can fly and he is pretty big. I’m hoping you can tell me what it is! Thanks!
Signature: Fiz

Red Shouldered Pine Borer

Red Shouldered Pine Borer

Dear Fiz,
This gorgeous Longicorn is a Red Shouldered Pine Borer,
Stictoleptura canadensis, and you can verify our identification on BugGuide where it states:  “The normal colouration of Stictoleptura c. canadensis (Olivier) is with banded antennae (male and female). Rarely the antennae are all black.… Christopher Majka, 31 January, 2013.”  Your individual appears to have all black antennae.  Some individuals  have mostly red elytra or wing covers.

Thank you! I was so confused!!! I can easily identity most bugs but this one gave me a time! Thanks again! :)

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Subject: What kind of bug is this?
Location: Virginia
June 17, 2016 1:38 pm
Hi,
Do you know what type of bug this is? I saw it on my sidewalk. Thank you!
Signature: Concerned

Decapitated Head of a Tile Horned Prionus

Decapitated Head of a Tile Horned Prionus

Dear Concerned,
This is the disembodied head of a Tile Horned Prionus, a large beetle with a very nutritious body.  We suspect a bird or other predator ate the body and left the unappetizing head for you to discover on the sidewalk.  Here is an image of an intact male Tile Horned Prionus.

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Subject: Weird bug
Location: Florida
June 8, 2016 8:52 pm
What kind??
Signature: Curious bug hater

Cottonwood Borer

Cottonwood Borer

Dear Curious bug hater,
Almost all of our reports of Cottonwood Borers are from Texas and Oklahoma, so your Florida sighting is unusual, though BugGuide reports the species from both Florida and California and as far north as Michigan.

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