They've eaten all the elms in town!

What kind of city is it?

Xanthogaleruca luteola is, in Russian, an elm leaf beetle. Periodically, outbreaks occur in it. This is the only way to destroy elms in the south.

This post was edited by Fornax13-03.08.2009 22: 52

Xanthogaleruca luteola (Muller, 1766) (Coleoptera, Chrysomelidae). Elm leaf eater. In the south-east of Ukraine, there was a strong outbreak in 2007-2008. But in 2009, it is very small. And you have a lot. Where are you located? Oh, I would like to track his current activity on the help of forum members, maybe something would be noticed in the dynamics...

Novokuznetsk, Western Siberia.
here's a pancake, I thought that at least butterflies, no matter how funny, were not so offensive, but this is a beetle....
and what will he eat next year?
and it is not known what provoked the outbreak?
caterpillar birds don't eat expanse just for wasp riders-I've already seen a lot of them dragging repurposed caterpillars.
what an uneducated dark woman I am-I thought that only butterflies have caterpillars...)))) or in beetles they are called larvae....

We, in Volgograd, also had an outbreak in 2007-2008 - all the elms were gnawed. This year, indeed, there are not many of these beetles. I only saw them in April, apparently overwintering - they were getting out from under the bark of an elm tree. And now there is no, and the elms are intact.

Last year, at our university on the 5th floor, the windows were washed in the fall, so there was a panic when they found clusters of these animals gathered for the winter, they immediately scattered all over the attic (there we have computer scientists sitting)... But large-scale damage to trees was not observed.

It would be interesting to see the elms themselves (or rather, what's left of them). I'm truly sorry. In our city (Central region) elm dries apparently from the virus, and if there are also leaf beetles...

It would be interesting to see the elms themselves (or rather, what's left of them). I'm truly sorry. In our city (Central region) elm dries apparently from the virus, and if there are also leaf beetles...

more likely from sapwood plants...

good news...
today we walked under the elms...
we've had some strong thunderstorms in the last few days...
on the elm trees themselves, there are no posti larvae...
but on the asphalt in puddles and next to curbs just piles, swarm, and climb back can not. I ueplyala, they are not strong enough...
elms are trying to give new leaves, maybe there will be enough time...
so in appearance we have an early spring ))))

unsuccessful attempts to climb the curb

eats the last leaf on the branch

new leaves popped up... vesnaaaaa....

and there are many such puddles

at the beginning of summer, this tree had a lush crown

and this is what is under all the trees... so I understand this is what used to be on the tree, poop that is...


This post was edited by Verunia - 06.08.2009 06: 21

Novokuznetsk, Western Siberia.
here's a pancake, I thought that at least butterflies, no matter how funny, were not so offensive, but this is a beetle....
and what will he eat next year?
and it is not known what provoked the outbreak?
caterpillar birds don't eat expanse just for wasp riders-I've already seen a lot of them dragging repurposed caterpillars.
what an uneducated dark woman I am-I thought that only butterflies have caterpillars...)))) or in beetles, they are called larvae....

Next year there will be different types of elms again. Dry branches on elms are not directly related to leaf beetles. Its imagos gnaw out round holes, and the larvae feed on the epidermis on the underside of the leaf, but do not eat through. Wasp riders are very interesting. Don't you have any photos of them? You can put it in the definition of email addresses.
Here are my photos of the elm leaf beetle. Donetsk, 2008
  

Pictures:
imago.jpg — (135.25к) 06.08.2009 — 20.08.2009

We, in Volgograd, also had an outbreak in 2007-2008 - all the elms were gnawed. This year, indeed, there are not many of these beetles. I only saw them in April, apparently overwintering - they were getting out from under the bark of an elm tree. But now it's gone, and the elms are intact.

Perfectly! Donetsk and Volgograd are in the same vegetation zone, the picture is similar.

Last year, at our university on the 5th floor, the windows were washed in the fall, so there was a panic when they found clusters of these animals gathered for the winter, they immediately scattered all over the attic (there we have computer scientists sitting)... But large-scale damage to trees was not observed.

In our city, people called the university, the botanical garden, the plant protection station in a panic - beetles in the mass climbed on balconies, into apartments through the windows. People demanded to stop this outrage. It was funny.
So there was no outbreak in Crimea in 2007-2008?
Here's another photo, larvae.
  

Pictures:
larva.jpg — (205.12к) 06.08.2009 — 20.08.2009

It would be interesting to see the elms themselves (or rather, what's left of them). I'm truly sorry. In our city (Central region) elm dries apparently from the virus, and if there are also leaf beetles...

Damn it, I can't attach a photo of damage from imago beetles in our city to the message for two days now. See the file in the archive.
Elm can dry out from the Dutch disease, which is very characteristic of elm trees. Although its main pathogens - fungi - are carried by bark beetles.

File/s:



1.zip

size: 156.02 k
number of downloads: 7
06.08.2009-20.08.2009

good news...
today we walked under the elms...
we've had some strong thunderstorms in the last few days...
on the elm trees themselves, there are no posti larvae...
but on the asphalt in puddles and next to curbs just piles, swarm, and climb back can not. I ueplyala, they are not strong enough...
elms are trying to give new leaves, maybe there will be enough time...
so in appearance we have an early spring ))))

We had exactly the same picture at the end of May with the black-headed ash sawfly.

Next year there will be different types of elms again. Dry branches on elms are not directly related to leaf beetles. Its imagos gnaw out round holes, and the larvae feed on the epidermis on the underside of the leaf, but do not eat through. Wasp riders are very interesting. Don't you have any photos of them? You can put it in the definition of email addresses.

well, maybe I have some special leaf beetle larvae, especially prozhrolivye, but I believe my eyes-they eat cleanly
here is a photo, as you can see, there is no top layer left from the leaf.
well, maybe I have some special leaf beetle larvae, especially prozhrolivye, but I believe my eyes-eat clean here is a photo


under the tree - as you can see, there are no leaves with upper layers

wasps with larvae could not be photographed - they carry them flying.
but there are quite a few such giotinok - I don't know who it is, but they showed a fair amount of interest in the caterpillars...


AND WHAT IS THE SIZE OF A LEAF BEETLE LARVA?
mine are 15-20 mm in size...
is this their normal size?
as you can see, no top layer remains from the sheet.

This post was edited by Verunia - 07.08.2009 12: 41

ah ... got it... leaf beetle is not the name of a specific beetle..
there are 400 species of them written in Siberia alone including colorada

well, leaf beetles are generally one of the largest families of the living world - there seem to be about 45 of them. thousands of species...

well, maybe I have some special leaf beetle larvae, especially prozhrolivye, but I believe my eyes-they eat cleanly
here is a photo, as you can see, there is no top layer left from the leaf.
well, maybe I have some special leaf beetle larvae, especially prozhrolivye, but I believe my eyes-eat clean here is a photo
under the tree - as you can see, there are no leaves with upper layers

wasps with larvae could not be photographed - they carry them flying.
but there are quite a few such giotinok - I don't know who it is, but they showed a fair amount of interest in the caterpillars...


AND WHAT IS THE SIZE OF A LEAF BEETLE LARVA?
mine are 15-20 mm in size...
is this their normal size?
as you can see, no top layer remains from the sheet.

The "wasp" is, of course, a rider, an ichneumonid, I think.
Yes, judging by your description, you do not have an elm leaf beetle (its larvae are on the order of several mm, within cm). It will be necessary to rummage through the literature.

We had exactly the same picture at the end of May with the black-headed ash sawfly.

So maybe there are false burrs of some sawfly here? I counted more than 5 pairs of abdominal legs/false legs.

{"Wasp" is, of course, a rider, an ichneumonid, I think.}
well, what to be ironic about... ))
I'm not a wizard I'm just learning slowly....
Or rather, I'm trying to...
they would have asked me how to crochet a lush column or make manta rays - then I would have been ashamed to make a mistake, and it's still vindictive to confuse the names of riders and wasps... both of them are slender and their faces are not kind....
Let's go for a walk I'll take a picture next to the ruler so that I can tell the exact length...

So maybe there are false burrs of some sawfly here? I counted more than 5 pairs of abdominal legs/false legs.

Then, perhaps, some elm (not mining) sawfly, but it is not familiar to me.
I didn't find any information on them, only about an invasive species from Central Asia that is harmful in Khakassia:
http://www.regnum.ru/news/42137.html

This post was edited by Pirx-08.08.2009 23: 34

gentlemen, just don't throw your slippers...
and that animal over there identified as a rider can't be a sawfly?
if I'm a sucker for insects, just look at the photos of sawflies - basically similar...

gentlemen, just don't throw your slippers...
and that animal over there identified as a rider can't be a sawfly?
if I'm a sucker for insects, just look at the photos of sawflies - basically similar...

No, for entomologists, horsemen and sawflies are not at all similar... well, approximately, for clarity, like bees and bumblebees.

The larva of the birch sawfly lives on a birch tree and is painted patronizingly-it is green with a thin black stripe.
After two weeks, the larva eats enough and descends from the birch to the soil. Here it goes deeper into the ground and pupates. The birch sawfly pupates in a solid barrel-shaped cocoon, which provides additional protection. Some larvae do not hurry to pupate, but "sleep" in the cocoon all winter, and do not come out the next year: this is a "reserve" of the species in case of unfavorable conditions in a certain year. The birch sawfly is distributed from Europe to Japan.
information
this is me to the fact that can I dig in the ground? maybe there are cocoons of some kind-pupae??
not all of them drowned...
there are no corpses on the ground, only in puddles and near curbs....
I'm not tired of them yet?
it's just too interesting to understand-my first experience...
and still it is necessary to count the legs, and false and "real")))
the investigation continues

This post was edited by Verunia-08.08.2009 13: 44

hooray!!!
gentlemen!!!!
do you recognize it???
Am I right?
is that him?



This post was edited by Verunia - 08.08.2009 13: 52

Really similar, but the view is probably different. Is there a name there?

http://www.regnum.ru/news/42137.html
news
krasnoyarsk from us nedoko

spotted Birch Sawfly
Arge pullata

or maybe the larvae are just a different age, the same species.

Sawflies rarely have monophagy, i.e. what is on a birch tree can also feed on elms. Are your birches untouched by them?

Hm....
plan for tomorrow to dig in the ground once
different age larvae nafotkat two..

birches are alive and well...
But just in case, I'll check it out tomorrow...

birches are alive and well...
But just in case, I'll check it out tomorrow...

For berezovsky, it is somehow not logical to bypass the birch tree. However, even the scientific name does not necessarily indicate the main food plant, and even more so in Russian.

Guest, which was me, didn't have time to log in.

there is also elm (Fenusa ulmi)
, but it is not similar.. vrode

According to the larvae, it can be difficult to determine sawflies with accuracy to the species. And, if they are also of an early age, then even more so. Now, if you remove the imago, then the species will be identified with 100% certainty.

and how to withdraw them?
I was visited by this thought, but I don't know which end to take - I have no experience in growing creating conditions. and when will it hatch? can I be stimulated somehow or wait for the summer?where to find them (earth?)? where to plant, tell me and I'll go to the excavations tomorrow and hatch it at home...

there is also elm (Fenusa ulmi)
, but it is not similar.. kind of

In general, there are about 2000 (!) species of sawflies in the Russian fauna alone.