Currently viewing the category: "Leaf Beetles"
What's That Bug? does not endorse extermination

Subject:  I think i may have a new type of bug i found on the sidewalk and carefully took it home
Geographic location of the bug:  Slovenia, Logatec
Date: 09/21/2017
Time: 08:33 AM EDT
Is it a new type it looms like half a ladybug ( the head) and some kind of black and bage stripes
How you want your letter signed:  However you want

Colorado Potato Beetle

This is a Leaf Beetle in the family Chrysomelidae.  It looks to us like a Colorado Potato Beetle, which is native to the Rocky Mountains in North America.  This amusing BBC News article begins with “In 1950 the East German government claimed the Americans were dropping potato beetles out of planes over GDR fields in an attempt to sabotage their crops. Was it true, or an example of Cold War propaganda?”  According to BugGuide:  “before the introduction of the potato in the US, was confined to Colorado and neighboring states feeding on native Solanum species; now occurs in most potato growing areas both in NA and Europe has become a serious pest in Europe.

What's That Bug? does not endorse extermination

Subject:  I call them Sith Lady Bugs
Geographic location of the bug:  Sierra Vista, Arizona, USA
Date: 09/12/2017
Time: 08:46 PM EDT
9/9/2017 San Pedro Riperian. Don’t they look like Darth Sith? Just wanted to share photos.
How you want your letter signed:  ptosis

Globe Mallow Leaf Beetle

Dear ptosis,
We are quite confident we have identified the orange beetles as Globe Mallow Leaf Beetles,
Calligrapha serpentina, based on this BugGuide image, and based on other BugGuide images, it appears this beetle has variable coloration.  According to BugGuide:  “Found on Mallows, pattern typical for genus, but details of pattern are fairly constant. Coloring varies from red to a striking light green (the green is an almost translucent metallic sheen over a yellowish to orange base). Differently colored individuals can often be found at one time in one population, but on average most individuals tend to be mostly the same color at one place and time. One generation is commonly a different color than the next.”  We are also confident that the light beetle in your third image is a member of the same genus, but most likely a different species.

Globe Mallow Leaf Beetle

Thank you so much! wow. I really thought they were a Sith Maul version of Ladybugs. Thank you so much!

Leaf Beetles, genus Calligrapha

What's That Bug? does not endorse extermination

Subject:  Bug
Geographic location of the bug:  Ground
Date: 09/09/2017
Time: 05:42 PM EDT
Hi. I found a bug that is orange and black and looks like a huge ladybug. What is it
How you want your letter signed:  Bug girl

Swamp Milkweed Leaf Beetle

Dear Bug girl,
This is a Swamp Milkweed Leaf Beetle,
Labidomera clivicollis, which you can verify by viewing this BugGuide image.

What's That Bug? does not endorse extermination

Subject:  Cute beetle
Geographic location of the bug:  Saint Paul, MN
Date: 09/03/2017
Time: 05:53 PM EDT
I saw this guy and was curious about what he is. Maybe a flea beetle?
How you want your letter signed:  Krista

Leaf Beetle: Calligrapha californica

Dear Krista,
Thanks to this BugGuide image, we have identified your Leaf Beetle as
Calligrapha californica.  According to BugGuide:  “The adult is a dark beige beetle approximately 6 mm long with 3 black stripes on its back” and “Larva feed on beggarticks (Bidens) and possibly other plants.” 

What's That Bug? does not endorse extermination

Subject:  Eggplant leaf eater
Geographic location of the bug:  Kenosha WI
August 26, 2017 1:36 PM
Can you identify this pest eating eggplant leaves in our Kenosha, WI garden?
How you want your letter signed:  Phil Wheeler

Colorado Potato Beetle Larvae

Dear Phil,
These are either Colorado Potato Beetle Larvae or a closely related species.  According to BugGuide:  “Potatoes and related plants” and eggplant and potato are in the same family.


What's That Bug? does not endorse extermination

Subject: What is this bug?
Location: Clayton, NM, USA
July 21, 2017 5:42 pm
I found this bug on our property in town but in an area that just grows what ever but it is mowed.
it was found on the plant in pictures, in Clayton, New Mexico, USA I was just curious what it is as I have never seen one like it.
Signature: Ayla S.

Feces Carrying Tortoise Beetle Larva

Dear Ayla,
This appears to be a Tortoise Beetle Larva in the tribe Cassidini, similar to this Thistle Tortoise Beetle larva pictured on BugGuide, however we are not convinced that is your species because BugGuide data does not include any New Mexico sightings, though there are Colorado sightings.  The description of where they were found is consistent with the BugGuide habitat:  “weedy fields and waste places where food plants grow.”  BugGuide lists the food as “various Asteraceae, incl. thistle (
Carduus, Cirsium, Onopordum) and knapweed (Centaurea) spp.” and the leaves pictured in your image look to us like they belong to the aster family.  There are other members of the genus and we suspect their larvae look similar, but the most specific we are comfortable responding is that this is a Tortoise Beetle larva from the tribe Cassidini.

What's That Bug? does not endorse extermination