Currently viewing the category: "Leaf Beetles"
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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

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Subject: Black/red with white spots?
Location: West Chicago, IL
May 24, 2014 7:30 am
Found this in my garden in northern Illinois hanging out on my asparagus. He had a couple friends, too. I did a search in google and can’t find what this is.
Signature: Toni

Asparagus Beetle

Asparagus Beetle

Hi Toni,
This Leaf Beetle in the family Chrysomelidae is an Asparagus Beetle,
Crioceris asparagi, and you can read much more about it on the Organic Garden website where it states:  “This beetle will produce two to four generations every year.  The adults will hibernate in trash left around the garden during the winter and will emerge in early spring to eat the asparagus shoots and lay their eggs.”  This species is an European introduction that has spread across much of North America.

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Subject: What Kind Of Bug Is This
Location: Connecticut
May 22, 2014 8:00 pm
His I Was Just Curious And Thought This Bug Was Quite Cool But I Don’t Know What It Is Help Me Please :)
Signature: Logan

False Potato Beetle

False Potato Beetle

Hi Logan,
This appears to be a False Potato Beetle,
Leptinotarsa juncta, but it might be another member of the genus.  According to BugGuide:  “Similar to Colorado Potato Beetle, but elytral punctures are regular instead of irregular. Also, a brown stripe at the center of each elytron (wing cover) and on the inner edge of each elytron (where they meet down the middle) distinguish this species.”

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Subject: Arthropods unknown to me
Location: Agartala, Tripura, North-East India
May 10, 2014 12:48 pm
On the day April 29th 2014 in Northern Hemisphere (Hot Humid weather) I was roaming around a river for photographing wildlife and I found some kind of creature which appeared arthropod to me. They were 3x2cm in dimensions. The day was bright sunny and temperature was around 36 degree c. I found a green colored spider also very near to them but it didn’t have any attention to them. The spider was as if ignoring them. I can’t name the plant which they were resting on but the leaves were eaten by someone , may be by them also… I don’t know.
I will be very grateful if you kindly help me identify them.
Signature: Abhik

Tortoise Beetle Larva

Tortoise Beetle Larva

Hi Abhik,
We are 99% certain that this is the larva of a Leaf Beetle in the family Chrysomelidae, most likely a Tortoise Beetle Larva in the Tribe Cassidini.  Here is an example from North America that is posted to BugGuide.  We will attempt to provide a species name for you, but that might not be possible.

Tortoise Beetle Larva

Tortoise Beetle Larva

Daniel,
Thanks a lot for helping me identify this larva. I will go to the place again and try to capture the whole life cycle of the Beetle. Thanking you again
Abhik

Tortoise Beetle Larva

Tortoise Beetle Larva

 

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Subject: Bug Take Over on Tree
Location: Northwestern Ontario Canada
April 27, 2014 2:59 pm
Hello,
Last year I noticed these bugs appearing on a tree in my yard. This year there are MANY MANY MANY of them taking over the tree, and the snow JUST melted.
Cannot figure out what the bug is, or how to help stop it from killing this tree.
Thanks for your help,
Jared R
Signature: Jared

Green Tree Beetles

Green Tree Beetles

Hi Jared,
We don’t know exactly where to begin looking to identify these green Beetles.  We have written to Eric Eaton for assistance.

Green Tree Beetles

Green Tree Beetles

Eric Eaton Responds
Hi, Daniel:
Those *aren’t* woodborers.  They are “flea beetles,” probably in the genus Altica, family Chrysomelidae.  Perhaps they overwintered as adults.
Eric

Green Tree Beetle

Green Tree Beetle

thanks Eric,
We have linked to the BugGuide page on the genus
Altica.

 

What's That Bug? does not endorse extermination

Subject: Rainbow larva
Location: Southwest Louisiana
April 18, 2014 6:35 pm
Located these beauties munching on a small tree a few hundred yards from the coast here in southwestern Louisiana. Relatively small at less than a 1/2 inch. Not very active and pretty much play dead when disturbed. Internet search turned up nothing. Any ideas?
Thank you!!
Signature: Karla

Groundselbush Beetle Larva

Groundselbush Beetle Larva

Hi Karla,
We were just going to write back that this is the larva of a Leaf Beetle in the family Chrysomelidae, but we decided to continue searching for its species identity.  After a bit of searching, we found a matching image of a Groundselbush Beetle Larva,
Trirhabda bacharidis, on BugGuide, and we are confident that it is the correct identification for your individual.  According to BugGuide:  “larvae and adults feed exclusively on leaves of Baccharis (Asteraceae) and it has been “Introduced into Australia and Asia to control Baccharis.”  We thought this was a new species for our site, but we were wrong.

What's That Bug? does not endorse extermination