Currently viewing the category: "Leaf Beetles"
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Subject: Chrysomelidae in Spain
Location: Spain
April 19, 2017 6:29 am
Dear Bugman,
I would like to know the name of this bug I saw in the Cantabrian region (north of Spain) last week. I’ve searched through lots of websites and the only information I got is that it could be from the Chrysomelidae family.
I appreciate your help!
Signature: Claudia

Leaf Beetle

Dear Claudia,
We tried, unsuccessfully, to identify this distinctive looking Leaf Beetle in the family Chrysomelidae.  Perhaps one of our readers will have better luck than we have had.

Thanks so much for your quick reply!
PS. I love your site
You are welcome, and thanks for the compliment. 
What's That Bug? does not endorse extermination

Subject: We found a bug mystery
Location: San Diego
April 6, 2017 5:29 pm
And by we I mean me and my cute 6 year old bug scientist daughter.
Signature: JW

Possible Beetle Larva and Description

Dear JW,
While we would very much like to provide you with a definitive identification for your 6 year old bug scientist daughter, the best we are able to provide is that this appears to be a Beetle larva.  There do not appear to be any visible wings present. We are curious why it is just a guess that it is eating leaves, and if so, what kind of leaves?  That might help with the identification.

Possible Beetle Larva

What's That Bug? does not endorse extermination

Subject: Green and White ladybug thing
Location: Louisiana
February 8, 2017 3:39 pm
I found this ladybug thing in my backyard in southern Louisiana in late Jan. The reason I say ladybug is its shape and wing structure. When it initially landed next to me it’s wings didn’t immediately tuck under its abdomen(?) after landing. I’ve searched the internet and can’t find a thing!
Signature: Buggy Fresh

Leaf Beetle

Dear Buggy Fresh,
You have encountered a Leaf Beetle in the genus
Calligrapha.  According to BugGuide:  “38 spp. and sspp. in 4 subgenera in our area” and many species look quite similar, so we are reluctant to attempt a species identification.

What's That Bug? does not endorse extermination

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

What's That Bug? does not endorse extermination

Subject: ID this bug?
Location: Union City, NJ
September 15, 2016 5:26 am
Thanks for your help!
Signature: CC

Spotted Cucumber Beetle

Spotted Cucumber Beetle

Dear CC,
We believe that if you look at images posted to BugGuide, you will agree that this is a Spotted Cucumber Beetle,
Diabrotica undecimpunctata.  BugGuide remarks:  “Considered a major pest of many field crops including cucumbers and other squashes, corn, soy. Beetles also transmit crop diseases such as bacterial wilt. Adults also reported damaging to garden plants including hibiscus, roses.”

What's That Bug? does not endorse extermination

Subject: gray and black beetle-like bug on swamp milkweed
Location: Fenton, MO
September 4, 2016 1:51 pm
Dear Bugman,
I ran into this creature while inspecting my swamp milkweed for monarch caterpillars. I found ver 10 caterpillars as well as this gray and sort of shiny creature. It has 5 black dots on each side and I think I see 6 legs but really small. its about the size of a ladybug. Found it on underside of Swamp. Milkweed leaf toward top of stem. I cannot tell where to begin to find out what this little guy or gal is and if he/she means harm to my milkweed or my monarch caterpillars.
Thanks so much!
Signature: fran

Swamp Milkweed Beetle Larva

Swamp Milkweed Leaf Beetle Larva

Dear Fran,
This is the larva of a Swamp Milkweed Leaf Beetle,
Labidomera clivicollis, and we identified it on BugGuide based on this image.  According to BugGuide:  “Larvae and adults cut several side-veins of a milkweed leaf prior to feeding, to reduce the sticky latex that would otherwise be produced at their feeding sites.”  So, the larvae and adults of the Swamp Milkweed Leaf Beetle share the same food source as the Monarch Butterfly, and unless the beetles are so populous that they defoliate the plants, they are not a threat to either the milkweed or the Monarch caterpillars.

Thanks you so much.  A few folks had thought it might be a false Potato Bug larvae??? Since I found it on a swamp milkweed leaf, a Swamp Milkweed Leaf Beetle makes sense!
Thanks do much!


What's That Bug? does not endorse extermination