Osmoderma eremita

In Latvia-well researched. It is common in suitable types of biotopes. Last year we had a serious project-we took inventory and mapped all the micro-populations (the species is protected in all EU countries). There are good photos, articles, and popular books. I can't post it on the forum - there is no place to answer specific questions. I recommend the recently published work on the occurrence of this species in Europe (Nikitsky wrote about Russia): Ranius T., Aguado L.O., Antonsson K., Audisio P., Ballerio A., Carpaneto G.M., Chobot K., Gjurasin B., Hanssen O., Huijbregts H., Lakatos F., Martin O., Neculiseanu Z., Nikitsky N.B., Paill W., Prinat A., Rizun V., Ruicanescu A., Stegner J., Sueda I., Szwalko P., Tamutis V., Telnov D., Tsinkevich V., Verstreit V., Vignon V., Voegeli M, Zach P., 2005.
Osmoderma eremita (Coleoptera, Scarabaeidae, Cetoniinae) in Europe. - Animal Biodiversity and Conservation 28.1: 1-44.

There is a pdf of the article, I can send it (where?). Any other questions are welcome.

Oh, by the way, I offer Zhukov for an exchange

This post was edited by Anthicus - 07.08.2007 15: 50

offer accepted

So, I deleted the Morpho photo (ALEXS still disappeared, doesn't look) and added one of the hermit's photos...

Pictures:

oe_4.jpg — (180.85к)

Dmitry, post your photos in the forum thread "Images of insects". There's plenty of room.

Dmitry, post your photos in the forum thread "Images of insects". There's plenty of room.

I tried it. I also have a permit for only 46 K there.

This post was edited by Anthicus-08.08.2007 09: 52

There is a pdf of the article, I can send it (where?). Any other questions are welcome.

Oh, by the way, I offer Zhukov for an exchange

For me, please. rpanin@mail.ru Preferably in Russian.
You can also exchange them.
Question: Actually, where is this suitable type of biotope? Old hollow trees .So I've already covered everything - nifiga! Only ran into hornets.
Maybe there are other distinguishing features?

This post was edited by rpanin-08.08.2007 12: 33

In the Moscow region, the species is found in old, sunny (sparse) oak forests with good herbage and sparse shrubs. It is found in hollows or simply crawling along trunks. The time is July. Now, I think it's already gone.

For me, please. rpanin@mail.ru Preferably in Russian.
You can also exchange them.
Question: Actually, where is this suitable type of biotope? Old hollow trees .So I've already covered everything - nifiga! Only ran into hornets.
Maybe there are other distinguishing features?

Old broad-leaved alleys, parks, free-standing old trees with hollows. The species differs elementary in the form of larval excrement, which (hermit or bronzer) are always present in the hollows

Active mainly in July. But beetles are caught until the end of September. At the same time, males usually (after mating, waiting for their demise) sit on the walls of the hollow or on the trunk (outside). And the females dig in the dust and catch them a little more difficult, you need to remove the substrate from the hollow.

This post was edited by Anthicus-08.08.2007 13: 01

The species differs elementary in the form of larval excrement, which (hermit or bronzer) are always present in the hollows

How exactly do they differ?

How exactly do they differ?

These are sausages with a width of 2-2. 5 mm and a length of up to 5 mm ???
I caught 3 larvae in a hollow oak tree in mid-June . And now I wonder what it is? It is already up to 4.5 cm long. They haven't pupated yet. (When does a hermit pupate?) And how does a broz larva differ from a hermit beetle ?) And even such an incorrect question - do they also go differently? Please excuse me for asking a lot of questions.
Determining by larvae is a lost cause. We are waiting for you-with imago!
If necessary, I will post a photo of the larva.

This post was edited by rpanin-08.08.2007 16: 15

As far as I remember, the larvae of the lamellidae can be distinguished by the chetotaxy of the psoledial segments of the abdomen, the shape of the anal fissure, etc.
In the "Fauna of the USSR" there are drawings...

How exactly do they differ?

This method of determining a hermit by excrement has been used in Europe for 15 years and thus a lot of new points have been opened.

Osmoderma excrement is not necessarily larger (larvae can also be small while growing), but with slightly rounded ends (compared to the flattened ones in bronzos and gnorimus) and, most importantly (!), these excreta are noticeably (but not strongly) flattened from the sides, compared to the characteristically cylindrical excreta of bronzos and gnorimus. By the way, they are very similar in shape to the excreta of Chalcosoma larvae, only much smaller than them.

Of course, I have good comparative photos, but I don't have any free space to post them on the site yet. I can recommend you to open the plan for the protection of the species in Latvia, which I have prepared and entered into force. There are photos, including excreta (Figure 9), but the text is all in Latvian: http://www.dap.gov.lv/public/files_uploade...P_osmoderma.pdf

We also have a free booklet on this type in two languages.
I sent it to Cyril and Peter. I can still send

Yes, here is a direct link to the bad pdf of the Latvian-Russian popular brochure: http://www.dap.gov.lv/public/files_uploade...a_Osmoderma.pdf

One more

Pictures:
  oe_2.jpg — (171.56к) 13.08.2007 — 27.08.2007

in the Lena region, near Luga, I found a female in a mixed forest on the bank of the Oredezh River on an oak branch.

Oh how!
In the Leningrad region! Congratulations! A rare beast, however, for these parts...

Oh how!
In the Leningrad region! Congratulations! A rare beast, however, for these parts...

North of the Gauja River valley (the Latvian-Estonian border), the species is isolated.

North of the Gauja River valley (the Latvian-Estonian border), the species is isolated.

Dmitry, is there any data on finds in the north-east of the Ryazan region (Kasimov)? In the forest there are separately growing oaks with a thickness of more than a meter, there is also a whole oak grove (trunks up to 60 cm in diameter). A lot of hollow trees, almost no shrubs under the trees. What are the chances and when is the best time to look for beetles?

Dmitry, is there any data on finds in the north-east of the Ryazan region (Kasimov)? In the forest there are separately growing oaks with a thickness of more than a meter, there is also a whole oak grove (trunks up to 60 cm in diameter). A lot of hollow trees, almost no shrubs under the trees. What are the chances and when is the best time to look for beetles?

The pan-European publication contains all known data on the occurrence of this species in Russia (compiled by Nikitsky). As I have repeatedly written, I can send a pdf file with the full text of the article (there is also a detailed list of all places). Unfortunately, I don't remember the Ryazan Region from memory.

Taking into account the example of Latvia, where only 5 finds were known before 1990, and now more than 100, I think that the species is much more widespread in Russia than is currently known.

This post was edited by Anthicus - 08/21/2007 11: 01

The pan-European publication contains all known data on the occurrence of this species in Russia (compiled by Nikitsky). As I have repeatedly written, I can send a pdf file with the full text of the article (there is also a detailed list of all places). Unfortunately, I don't remember the Ryazan Region from memory.

Taking into account the example of Latvia, where only 5 finds were known before 1990, and now more than 100, I think that the species is much more widespread in Russia than is currently known.

Send it, thank you in advance! mikee@links.ru

Send it, thank you in advance! mikee@links.ru

I'll send it to you tomorrow, but I don't have it with me today.

A couple from the border of the Moscow and Tula provinces (I'll specify the point later).
Imago on ripe lime trees, mid-late July.
It's funny, but in Ukraine and in other places where I or my friends caught them, none of them was in any way tied to oaks.

Pictures:
  osmoderma.JPG — (53.38к) 21.08.2007 — 04.09.2007

A couple from the border of the Moscow and Tula provinces (I'll specify the point later).
Imago on ripe lime trees, mid-late July.
It's funny, but in Ukraine and in other places where I or my friends caught them, none of them was in any way tied to oaks.

Yes, I have an old manor park with centuries-old lime trees nearby... Thank you.

A couple from the border of the Moscow and Tula provinces (I'll specify the point later).
Imago on ripe lime trees, mid-late July.
It's funny, but in Ukraine and in other places where I or my friends caught them, none of them was in any way tied to oaks.

Well, since we are talking about the trees that the species inhabits. then in Latvia it is (in descending order of importance): linden, oak, maple, ash, black alder, chestnut, elm, white willow, pine. Maybe. I'd forgotten what other tree it was... But linden is the main thing. Oak - a little less, because we do not have a lot of oaks. And in Central Europe and Sweden, the species is practically only on oaks, and in France it is more on beeches and chestnuts.

And here is an excerpt from a pan-European article indicating tree species (note that in the south, the species inhabits centenary orchards with fruit trees):

Oak (Quercus spp.) is the most important tree for O. eremita, followed by lime trees (Tilia spp.), willows (Salix spp.), beech (Fagus sylvatica) and fruit trees (Prunus spp., Pyrus spp, Malus spp.) (fig. 1). In many regions, ash (Fraxinus spp.), elm (Ulmus
spp.), chestnut tree (Castanea sativa), aspen and poplars (Populus spp.), birch (Betula spp.) and maple (Acer platanoides) are also important host trees. Mulberry trees (Morus spp.), common alder (Alnus glutinosa), plane trees (Platanus spp.) walnut trees (Juglans regia) and hornbeam (Carpinus betulus) are other tree species which the beetle has been found in. Findings from needle trees are more rare; however, the species has been found in silver fir (Abies spp.) in Greece and Denmark, in yew trees (Taxus baccata) of France (Caillol, 1913 in Tauzin, 1994b), and in Scots pine (Pinus sylvestris) in Slovakia and Poland. The species has been found in exotic tree species such as false acacia (Robinia pseudoacacia) (for instance, in France, Germany, Italy and Austria), Japanese honeysuckle (Lonicera nipponica) (Janssens, 1960), silver maple (Acer saccharinum) (in Germany: Stegner, 2002) and horse chestnut (Aesculus hippocastanum) (in Denmark, Sweden, Poland and Austria).

This post was edited by Anthicus - 08/22/2007 10: 36

Yes, it's funny... even coniferous trees - somehow I can't believe it, chesslovo...
Thanks for the info.

The type of tree does not matter, it is important to have a hollow tree with a certain type (degree) of wood decomposition. In conifers, these are also found, but rarely. In Latvia, I personally found Osmoderma in a pine tree.

This post was edited by Anthicus - 08/22/2007 16: 15

The type of tree does not matter, it is important to have a hollow tree with a certain type (degree) of wood decomposition.

A specific type/genus of wood-destroying fungi?

A specific type/genus of wood-destroying fungi?

Someone else would have posted a photo of the larva.

Someone else would have posted a photo of the larva.

There are also larvae, but there is no place to put them

Someone else would have posted a photo of the larva.

I don't think so. It is the type of splitting of the wood itself. Fungi, of course, participate, but without establishing the connection of the formation of this type of "dust" with any specific tinder.

The population of the species is also preserved in fallen trees. Usually, up to 3 years. However, only remains-imago from such trunks are already leaving. Fallen wood is bad because it gets wet on the ground. And wet, as Nemrod writes, is really not suitable for Osmoderma larvae.

About the" openness " of trees. Solar exposure strongly affects the type of tree growth. In the shadow of the forest, everything stretches up, the hollows are few, the trunks are narrow. In the open, trees grow in breadth, hollows are formed beautiful, suitable for Osmoderma. The sun or shadow itself doesn't matter. I know of oaks that used to grow in the fields (about 30 years ago), but now they are completely overgrown with dense forest. And the population of Osmoderma in these oaks perfectly exists further, in the shade.

As I have already written, in the Baltic States years up to the end of September. Males, which is logical, die before females, after mating.

Yes, still interesting. It is often written that adults do not move more than 200 m from their native tree. This is true, but not quite. They fly well, fly more than 1 km (personal observations). However, they do not like to fly and rarely fly.

And the smell, for me, is the musk of pure water. By the way, you can also successfully search for Gnorimus variabilis by smell!

This post was edited by Anthicus - 08/23/2007 15: 34

Of course, Mr. Anthicus, but this is only if we are dealing with an already mature beetle population (there should have been 5-6 generations), and, in addition, there is no mindless cutting and cleaning of forest squares "for yourself and your brother-in-law", as it often happens, unfortunately. In this regard, of course, you are right.
Sincerely,...

In Latvia, the Osmoderma micro-population conservation program regularly cuts down bushes and undergrowth around trees inhabited by the species, as well as grazing livestock to prevent their overgrowth.

In fallen trees, larvae have the opportunity to" develop", but, as I wrote, adults avoid them and do not lay eggs in fallen trunks.

My respect!

In the Moscow region, the species is found in old, sunny (sparse) oak forests with good herbage and sparse shrubs. It is found in hollows or simply crawling along trunks. The time is July. Now, I think, already got off.

More precisely, July - the first half of August. Omoderma eremita is a typical late summer species

At the request of Mr. rpanin. This year, a male was found in OCD. Nevitsky Castle. Infu, as well as the beetle itself, was received quite recently. If you can go there, try it. It is quite possible that you will be able to find larvae, which is also interesting.
Sincerely,....

This post was edited by Nimrod - 10/11/2007 15: 03

I don't think so. It is the type of splitting of the wood itself. Fungi, of course, participate, but without establishing the connection of the formation of this type of "dust" with any specific tinder.

I understood that the structure of rot does not matter, because the hollow is the cessation of rotting and the beginning of mechanical decay of wood, the rotting process has already stopped. So everything is based on the biology of the beetle. But the question is interesting. You can also trace the structure of rot and color, from here you can find out the type of rot and the biological features of fungi. It is quite possible that the formation of this kind of "dust", for example, is a consequence of the corrosive type of putrefaction, etc.

This year I found osmoderma again in July, in a hollow tree. In August, I put my hand in there - and there were hornets. He left very quickly.

This year I found osmoderma again in July, in a hollow tree. In August, I put my hand in there - and there were hornets. He left very quickly.

That's what I mean. Sometimes it's kind of scary to rummage through the hollows . You never know what's out there. Rodents, birds, or something like hornets or wild bees. By the way, as I already said , I also ran into them in the same way .Fortunately, the legs were saved.