Currently viewing the category: "Flea Beetles"

Subject:  Pretty beetle found on fishing pier
Geographic location of the bug:  Florida
Date: 02/18/2020
Time: 11:01 AM EDT
Your letter to the bugman:  I found this handsome gentleman hiding in-between two slabs of concrete on a marine fishing pier. He’s very pretty! What does he eat? I’m not entirely sure why’d he prefer being close to the ocean- it just doesn’t look like he belongs!
How you want your letter signed:  Chance Arceneaux

Flea Beetle:  Disonycha pensylvanica

Dear Chance,
We believe we have identified this Leaf Beetle as
Disonycha pensylvanica thanks to this BugGuide image.  According to BugGuide:  “For the most part found near aquatic habitats” and “Normal hosts are Polygonum spp. including smartweed.”

Subject:  Orange bug I’ve never seen
Geographic location of the bug:  Lee county, Kentucky
Date: 06/17/2019
Time: 11:41 PM EDT
Your letter to the bugman:  I’ve never seen this bug before and couldn’t find it online anywhere.  Just curious, really.
How you want your letter signed:  C. Abner

Passionflower Flea Beetle stalked by Jumping Spider

Dear C. Abner,
We are amused at your image of a Passionflower Flea Beetle being stalked by a Jumping Spider.  According to BugGuide:  “Larvae and adults freq. found on Passionflower (

Haha!!  Yeah, the spider wasn’t there when I went to take the picture.  He jumped out last second and did a ‘photobomb’!  And then went back to his hiding spot under the rail!
Thank you so much for the info!  You’re welcome to use my photos if you’d like.

Subject:  Beautiful Ladybug
Geographic location of the bug:  Puerto Viejo, Costa Rica
Date: 10/29/2017
Time: 08:50 PM EDT
Hi there,
I failed to identify this bug, I have found on a palm leave in Puerto Viejo, Costa Rica. It  ‘s size is about other lady bugs. Can you identify, please?
How you want your letter signed:  Johannes Oehl

Eight Spotted Flea Beetle

Dear Johannes,
This is not a Lady Beetle.  It is a Leaf Beetle in the family Chrysomelidae, and based on the hind legs, we believe it is a Flea Beetle in the tribe Alticini.  It is identified as
Omophoita sp. on the Las Cruces and Wilson Botanical Gardens Costa Rica 2010 Smug Mug site.  It is identified as Omophoita cyanipennis on FlickR and on Jungle Dragon it is called an Eight Spotted Flea Beetle.

Eight Spotted Flea Beetle

Hello Daniel
Thank you very much for the identification work!!!!
Feel free to visit my website

Subject: Beetle ID
Location: Mt Rainier NP, WA
June 6, 2017 9:08 am
Team Biota, volunteers at Mt Rainier would like you to identify a recent find from Steven’s Canyon in Mt Rainier. The beetle was crawling along the rocks in the canyon (70 degrees, sunny) but, did not appear feeding on any plant life. Have never seen this beetle in the Park before.
Signature: J. Dreimiller

Unknown Flea Beetle

Dear J. Dreimiller,
This looks to us like a Flea Beetle in the genus
Disonycha, which is well represented on BugGuide, however, BugGuide data does not list any species as being reported in Washington or indeed, the entire Pacific Northwest.  At any rate, the best we can provide at this time is that this is a Leaf Beetle in the family Chrysomelidae.  There are no Leaf Beetles reported on the Mount Rainier National Park Check List, so perhaps you should post your images there to see if you can get a more specific identification.  Please let us know if you learn anything, and perhaps one of our readers will provide a comment with an identification.

Unknown Flea Beetle

Subject: Zambia
Location: Zambia
January 31, 2017 1:19 am
I found the buck below in Sambia in vetches.
Thank you very much!
Signature: S. Frantz

Flea Beetle, we believe

Dear S. Frantz,
We believe this is some species of Flea Beetle in the tribe Alticini, a group in the Leaf Beetle family Chrysomelidae.  Your image resembles this image posted to iSpot.

Hello Daniel,
thank you very much for your detailed answer!!!!
It was a big help and I really appreciate your work.
Kind regards from Germany,
Simon Frantz

Subject: Safe or not?
Location: North east USA, Pennsylvania
July 8, 2016 2:48 pm
I occasionally find these in my kitchen they kind of jump and I believe they have wings like ladybugs but I haven’t seen them fly just jump…
Signature: Concerned Mama

Northern Plantain Flea Beetle

Northern Plantain Flea Beetle

Dear Concerned Mama,
Thank you for including a pack of Newport cigarettes for scale, and in our opinion, that pack poses a far greater health threat to all involved than this Flea Beetle does.  We believe we have correctly identified it on BugGuide as the Northern Plantain Flea Beetle,
Dibolia borealis, and based on the size relationship to the pack of cigarettes, the stated 3mm size seems about correct.  According to BugGuide, they feed on:  “Plantago spp. (Plantaginaceae)” and “Larvae are leaf miners of plantains. ”  According to The Herbal Encyclopedia:  “The plant is indigenous to the Mediterranean region and western Asia; but it now grows worldwide … .  To many areas, it is considered a weed.  The herb is an annual that grows to about sixteen inches in height, producing narrow leaves and clusters of tiny whitish-brown flowers.”  Plantain grows in many fields and open areas in the eastern part of North America.  Perhaps you have some plantain near your kitchen which is causing the Flea Beetles to accidentally enter your home.