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

Subject: Never seen before
Location: Central maine USA
June 28, 2014 8:04 pm
Found this on sons water bottle at the golf course.
Signature: sean

Clavate Tortoise Beetle

Clavate Tortoise Beetle

Dear Sean,
Both adults and larvae of the Clavate Tortoise Beetle,
Plagiometriona clavata, feed upon the leaves of plants in the family Solanaceae which includes many commonly cultivated garden plants like tomatoes, peppers and eggplant.

What's That Bug? does not endorse extermination

Subject: Bug in my vegetable garden
Location: Southern Connecticut
June 7, 2014 3:59 pm
I found this bug on a leaf of my eggplant plant in my vegetable garden. What kind of bug is it? Is it harmful to my garden? Will it eat the leaves off my vegetable plants?
Signature: ACR

Clavate Tortoise Beetle

Clavate Tortoise Beetle

Dear ACR,
This is a Clavate Tortoise Beetle,
Plagiometriona clavata, and according to BugGuide, adults and larvae feed upon:  “ground-cherries (Physalis), Jimsonweed (Datura stramonium), and Solanum spp. (Solanaceae).”  Those plants belong in the same family as eggplant, peppers and tomatoes.

What's That Bug? does not endorse extermination

Subject: Unknown on my potato plants
Location: Norfolk, MA
June 9, 2014 7:00 am
This bug is on my potato plants in eastern Mass. Thie first time I found one I picked the leaf it was stuck to and took it to my CSA farmer, who had no ideas. They sort of suction onto the leaves. this year, there are more. I have some leaf damage, but not too bad. Then the other day my daughter was trying to get one to crawl/move, and away it flew! no visible wings when it’s sitting there, and it flies in a slow kinda clumsy way. Just trying to figure out if they are damaging to my garden, how to deal with them.
thanks!
Signature: Caroline

Mating Clavate Tortoise Beetles

Mating Clavate Tortoise Beetles

Hi Caroline,
These are mating Clavate Tortoise Beetles, and the adults and larvae feed on the leaves of plants in the family Solanacea, which includes potatoes, tomatoes, peppers, eggplant and other similar garden crops.

Thank you!  I’ve never seen anything like these, and based on your identification I’ll leave them alone unless the leaf damage gets to be too much.  Then possibly beetle relocation program!  (though I have read they like tomato, pepper and squash plants, all of which I have this year)

What's That Bug? does not endorse extermination

Subject: Willow eating bug
Location: Eastern Pennsylvania, USA
June 3, 2014 4:49 am
Our willow tree leaves are being eaten away by this strange creature. Please help identify it.
Signature: David

these are predatory lady beetle larvae and they feed on aphids, not leaves.

Ah! So the aphids should be somewhere about eating the leaves then?
Sincerely,
David

no, aphids suck the juices from plants

I’ll try again…this little thing is definitely eating the leaves on my Willow tree.
Sincerely,
David

Leaf Beetle Larva

Leaf Beetle Larva

Bingo David,
This is the larva of a Leaf Beetle in the family Chrysomelidae, and we will attempt to identify it to the species level for you.  Willow is a popular food plant among insects, including species of butterfly caterpillars, moth caterpillars and aphids
.  We seem to recall a Willow Leaf Beetle identification in the past and we were correct, however, the larva pictured on BugGuide looks nothing like your Leaf Beetle Larva.  We believe we found a larva that matches yours identified on the Evolution in Structured Populations University of Vermont website, but the are only identified generally and this behavior is described:  “Imported willow leaf beetles are group foragers.  Larger groups survive better than small groups.”  The University of Minnesota Extension website identifies the Imported Willow Leaf Beetle as Plagiodera versicolora and states: “Adult beetles make notches or holes in leaves/  Larvae windowpane leaves, i.e. they feed on the upper surface of the leaves between the veins.  Prefers willows and poplars, especially weeping willow.  Adults are bluish-black to greenish blue, about ⅛ – ¼ inch long.  Larvae are dark, almost black and about ¼ inch long.”  According to BugGuide, you are in the range of the Imported Willow Leaf Beetle. 

What's That Bug? does not endorse extermination

Subject: Beetles on the beans and squash!
Location: Mt. pleasant, NC
June 3, 2014 6:09 am
Hi, bug man! I’ve got these little critters all over my beans, squash, and some of the weeds in my garden. Some have suggested a blister beetle, but the pattern is slightly different in those pictures… I’ve not seen these guys before. I live in the piedmont of NC.
Signature: Steph Street

Leaf Beetles

Leaf Beetles

Dear Steph,
We believe we have correctly identified your Leaf Beetles in the family Chrysomelidae as
Lema solani, a species with no common name, thanks to images on BugGuide.  You indicate they are feeding on beans and squash, and the information provided on BugGuide indicates they feed on “Solanaceae” which is the family that includes tomatoes and peppers.

Thank you!  I will keep an eye on my tomatoes and peppers for sure.  I believe the weed they are feeding on in my garden is in the pepper family.  Perhaps something else is munching my beans and squash.

What's That Bug? does not endorse extermination

Subject: Beetle larva and other?
Location: North East NJ
May 27, 2014 8:06 am
Hello and thank you for this site and your time. If you ever get the time to ID, this insect I would be grateful, however it is just a matter of curiosity and nothing dire so if you get around to it great and if not, thank you anyway. This picture was was taken in North East New Jersey a few days ago in May on a plant lining a pond. The larger one in the center of the photo should be some type of beetle larvae (Uneducated guess). Would you know what type of beetle it is or if I am right? The almost metallic color to it, threw me off and I don’t think it is a ladybird beetle larvae or a dermestid. (Again could be wrong.) Also when I got the pic back and looked at it, I noticed something coming out of it’s posterior. I know larvae are not sexually mature so, not to be gross, is it just pooping or is that a parasite. Lastly I also noticed the smaller red juvenile bugs also, any idea what these are?
As always with or without a response thank you for your work
Signature: Frank Smith

Groundselbush Beetle Larva

Groundselbush Beetle Larva

Hi Frank,
You are  correct about the Beetle Larva.  More specifically, it is the larva of a Groundselbush Beetle,
Trirhabda bacharidis, a species that feeds exclusively on Baccharis.  We are not certain what it is excreting, and we are not certain of their identity, but the tiny red nymphs might be immature Leafhoppers or Spittlebugs.

Thank you so much for your response, it made my day. I learned about a beetle that is new to me, so thanks again! I will follow up and see if I can find any references on what it is excreting or being parasitised by and will keep you posted if I find anything. You people are awesome!
Frank

What's That Bug? does not endorse extermination