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Identification of beetles (Coleoptera)

Community and Forum → Insects identification → Identification of beetles (Coleoptera)

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01.12.2006 8:44, Mylabris

There are several close genera - you need to look at a copy...

01.12.2006 13:51, okoem

104_19.jpg Larinus eutus ?


eutus - I can't find such a taxon in the checklists... A typo?

01.12.2006 14:06, RippeR

I can't find something either confused.gif

04.12.2006 1:57, Necrocephalus

Today I went to collect wintering beetles. I caught a few things, including three swans. According to the definition of "Insects of the European part of the USSR", it turns out that this is Lebia chlorocephala, but with one inconsistency: the definition says that this species has a black underparts, and the entire chest (both anterior and middle and posterior thorax) is red, and the abdomen is metallic blue - green. Otherwise, my differences fully fit the criteria given in the determinant. Photo of L. chlorocephala found on www.zin.ru, depicts a beetle that looks very similar to the ones I caught (although there is only a top view). I'm posting this photo. Maybe I caught some subspecies of L. chlorocephala? Or does it have so much intraspecific variability? If this is the case, then why is it stated in the determinant only about the black bottom? Or maybe it's not chlorocephala at all? I am waiting for your comments and suggestions smile.gif

Pictures:
picture: Lebia_chlorocephala.jpg
Lebia_chlorocephala.jpg — (20.2к)

04.12.2006 13:48, Bad Den

Doesn't it look like L. cyanocephala?
You must have both types in common.

04.12.2006 15:03, Necrocephalus

2 Bad Den: no, it doesn't look like cyanocephala: first, there are two segments of the antennae, and even part of the third, and not one, as in cyanocephala. Secondly, the gaps in the NDC are smooth, not coarse-pointed. In short - by all signs it is chlorocephala, if not for the red breast.

10.12.2006 2:54, Necrocephalus

Can a Patrobus atrorufus (excavatus) be only 6 mm long? Provided that its dimensions are specified in the determinant within 8-10 mm.

12.12.2006 10:11, Dmitry Vlasov

Unlikely... Of course, if you measured it accurately.
Most likely, the view is different. Patrobus s are similar in size and size to Pterostichus minor.
Likes: 1

14.12.2006 20:30, Necrocephalus

Unlikely... Of course, if you measured it accurately.
Most likely, the view is different. Patrobus s are similar in habit and size to Pterostichus minor.


I may not have measured it very accurately (using a drawing ruler), but in any case, if the beetle goes beyond the 6 mm mark, it is very insignificant.
The fact that this is not a pterostichus, but a patronus is unequivocal. But here's the size... No species in this genus is reported to be smaller than 7 mm. And in general, the specimen is unusual - there are signs of both P. assimilis and P. atrorufus. Probably, to determine it, you need to show it to a specialist.

14.12.2006 21:30, Mylabris

There is such a rule in taxonomy: the 80% rule. Approximately this much is distributed along the normal curve. The rest are freaks, aberrants and runts - that is, "under-performing" for some reason to "normal". Maybe this is just the case?

15.12.2006 1:03, Necrocephalus

The rest are freaks, aberrants and runts - that is, "under-performing" for some reason to "normal". Maybe this is just the case?


I don't rule out this possibility. It is bad that there is nothing to compare it with - there are only 1 specimens of P. septentrionis from patrobuses, and this aberrant. I'll have to show it to a professional entomologist.

17.12.2006 14:25, stierlyz

According to the definition of "Insects of the European part of the USSR", it turns out that this is Lebia chlorocephala, but with one inconsistency:


In this determinant, the table for Lebia is made up shitty. The photo is clearly Chlorocephala.
Likes: 1

17.12.2006 22:57, Necrocephalus

In this determinant, the table for Lebia is made up shitty. The photo is clearly Chlorocephala.

To be honest, I also "scored" on the red chest, and put the beetles in the collection as L. chlorocephala. Maybe it's just a subspecies of this "red-breasted" I came across.
Likes: 1

21.12.2006 14:01, KDG

Please help me identify the beetles! All photos were taken in Crimea. Larger photos can be viewed at http://okoem.iatp.org.ua/insecta/coleoptera.htm
I will be grateful for pointing out errors and for identifying the types available there!

what everyone calls Strangalina attenuata is actually called Leptura maculata
Likes: 1

21.12.2006 23:53, guest: Alex

A little late, but oh well)))
About the beetle from France-IMHO it is a ground beetle Amara sp. (according to the mustache, well, not a darkling at all)
About Ophonus or Harpalus-of course Harpalus, and in the Astrakhan region in general figs knows what can be. Asian fauna, however.
As for the ground beetle larvae, this is definitely not Cicindelini, because they have a special structure - they live in burrows and the head is located 90 degrees to the body. It can be about the same Harpalus.
Ground beetle from Croatia-dear dabb, make another ode to a better photo.

22.12.2006 9:31, Mylabris

That's Alex
Blackie. The antennae are quite normal. Pay attention to the structure of the architrave!

25.12.2006 19:26, daniil naumoff

Novosibirsk, Akademgorodok, July 15, 2006

picture: ____________3401a.jpg
picture: ____________3402a.jpg

25.12.2006 20:20, Bad Den

Barbel of the genus Monochamus

25.12.2006 20:21, RippeR

long sawyered beauty monochamus sutor

25.12.2006 20:39, rpanin

Barbel of the genus Monochamus



male -as the Chukchi said.

26.12.2006 8:11, Bad Den

long-moustached handsome monochamus sutor

I would not specify the exact type, there are some places beyond the Urals that are not found in the European part.

26.12.2006 12:17, daniil naumoff

and why does it have such an uneven color? so it should be or got dirty?

26.12.2006 17:35, Mylabris

Rather than getting dirty, I was wiped off.

27.12.2006 10:11, amara

Can you tell from this photo?
Park in Moscow, approx. 1 cm, April 27.

This post was edited by amara - 27.12.2006 10: 26

Pictures:
picture: P1010015.JPG
P1010015.JPG — (135.13к)

27.12.2006 12:52, RippeR

It looks like it got dirty.
"beyond the Urals there are those that are not found in the European part"
Of course there are a lot of things there, but I think so smile.gif

27.12.2006 12:52, Dmitry Vlasov

Tachinus sp.

27.12.2006 13:55, amara

Quickly! Thank you.

29.12.2006 10:40, amara

May, Moscow. Can you tell me who it is? Thank you.

Pictures:
picture: P1010018.JPG
P1010018.JPG — (143.51к)

picture: P1010019.JPG
P1010019.JPG — (147.49к)

29.12.2006 14:35, Bad Den

Poecilus sp.

01.01.2007 16:34, Necrocephalus

I have such a question: the sizes of weevils in standard determinants are given taking into account the length of the head tube, or without taking into account its length?

01.01.2007 18:11, gumenuk

Moscow region, Ramenskiy district, near the village of Khripan.
Original date/time: 2006:06:02 15:40:09.
The body length is about 7 mm.
It has similarities with both gravediggers and leaf eaters. I'm inclined to think it's a leaf eater.

Pictures:
picture: 07_01_062_DSC07276.jpg
07_01_062_DSC07276.jpg — (138.51к)

01.01.2007 18:52, Necrocephalus

These are clearly Silphidae, not Chrysomelidae.

It is very similar to Phosphuga atrata, but the size for this species is somewhat small - it is usually about a centimeter, sometimes more. Maybe this bug was still bigger than 7 mm? If so, it is exactly P. atrata.
Likes: 1

01.01.2007 20:06, gumenuk

Indeed, there is a very large similarity with the three-line one. As for the size, I wrote it from memory, and I could have downplayed it:- (
I am a little confused by the ends of the antennae - in dead eaters they have a thickening at the end. Or am I wrong?

01.01.2007 20:21, Necrocephalus

Yes, indeed, the ends of the antennae of dead eaters are usually thickened (up to the false-plate mace of grave diggers). The beetle that is shown in your photo has antennae located in the longitudinal plane relative to the camera lens, and therefore they look slightly thickened. If the beetle had turned them differently, they would have looked more club-like. So this beetle is Phosphuga atrata, without a doubt.

In general, it is difficult to determine views from photos precisely because of their two-dimensional nature. It was another matter to pick up a copy, turn it over, and examine it... smile.gif

02.01.2007 11:47, amara

Thanks to Bad Den. Can these photos distinguish P. cupreus L. from P. versicolor Sturm?

This post was edited by amara - 02.01.2007 11: 47

02.01.2007 15:07, Bad Den

2 Necrocephalus:
Yes, apparently, with a head tube, at least in the "Determinant of insects of the European part of the USSR"

2 amara
No, in my opinion, it is impossible to say unequivocally.
Likes: 1

03.01.2007 11:50, Сергей-Д

Help me determine up to the following type:
1.picture: 1___Cerambyx.jpg
2.picture: 10___Skak.jpg
3.picture: 11___Staf.jpg
4.picture: 2___Bronz1.jpg
5.picture: 3___Bronz2.jpg
6.picture: 4___Dorc.jpg
7.picture: 5.jpg
8.picture: 6___List.jpg
9.picture: 7___List2.jpg
10.picture: 8___Plav.jpg
11.picture: 9___Rag.jpg
And please tell me the Litanic names of the deer beetle, rhinoceros, big pine zlatka, July crunch, corn dung beetle

03.01.2007 14:04, RippeR

1. Cerambyx scopoli in my opinion.. It is difficult to say for sure because of the color of the nadkyli on the back and the size of the beetle.
2. Cicindela maritima ?
4. Netocia cuprea ?
5. Potosia affinis
6. Dorcadion holosericeum
7. Cucujus cinnaberinus ?
11. Rhagium inquisitor

03.01.2007 15:05, KDG

Help me determine up to the following type:
And please tell me the Litanic names of the deer beetle, rhinoceros, big pine zlatka, July crunch, corn dung


3. Staphylinus caesareus
8. Chrysolina fastuosa

03.01.2007 21:15, Bad Den

9. these are bedbugs of some kind
10. Cybister lateralimarginalis

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