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Identification of beetles (Coleoptera)

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

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30.09.2010 18:03, Алексей Сажнев

well, yes, male, imho
Likes: 1

30.09.2010 18:07, vasiliy-feoktistov

Dytiscus marginalis is. They have smooth females, and I have some. In circumcinctus, the metacox processes are noticeably sharper.

yes.gif Yeah, I stepped on curcumcinctus female and narrower on top.
1) D. marginalis
2) D. curcumcinctus
What I come across all the time:

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30.09.2010 18:44, Sungaya

but who are these?
Moscow Region, Kolomenskiy district, July 29

This post was edited by Sungaya - 30.09.2010 18: 47

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30.09.2010 18:50, botanque

The one on the right is circumcinctus. On the left, too, it seems. If the yellow border completely circles the eye, then it is.
Likes: 2

30.09.2010 19:03, Sungaya

The one on the right is circumcinctus. On the left, too, it seems. If the yellow border completely encircles the eye, then-it.

and so it is visible?

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30.09.2010 19:04, Алексей Сажнев

both )
Likes: 1

30.09.2010 19:06, botanque

Aha, both circumcinctus )
Likes: 1

30.09.2010 19:50, Sungaya

and here is another
MO, Sergiev Posad district, August 9

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Likes: 3

30.09.2010 19:51, Алексей Сажнев

right - female Cybister lateralimarginalis... left like curcumcinctus (male)

This post was edited by Alexey Sazhnev - 30.09.2010 19: 53
Likes: 1

30.09.2010 19:54, botanque

On the left - marginalis. But Zibister from the Ministry of Defense did not quite expect.
Likes: 1

30.09.2010 19:55, vasiliy-feoktistov

On the left marginalis, but on the right Cybister lateralimarginalis De Geer, 1774 it looks like??? For M. O. nonsense in my opinion. If so, congratulations.
Likes: 1

30.09.2010 19:55, Алексей Сажнев

taki, marginalis... Oh, right, I didn't see the eye border
Likes: 1

30.09.2010 19:56, vasiliy-feoktistov

Sasha, and where exactly near Zagorsk (at the very cottage there) wink.gif

30.09.2010 20:06, Sungaya

Sash, and where exactly near Zagorsk (at the very cottage there) wink.gif

It is near Khotkovo, Zolototilovo village.
These days (August 5-9 of this year) was the most interesting year of butterflies (9 new species arrived that had not previously been found in these places. In general, this is probably all that was interesting this yearsmile.gif, and from the beetles here are the last two and some other small things. I'll post them on the definition page later.
Likes: 2

30.09.2010 20:10, vasiliy-feoktistov

It is near Khotkovo, Zolototilovo village.
These days (August 5-9 of this year) was the most interesting year of butterflies (9 new species arrived that had not previously been found in these places. In general, this is probably all that was interesting this yearsmile.gif, and from the beetles here are the last two and some other small things. I'll post them on the definition page later.

From beetles, the Buffoon (Cybister) in general, in my opinion, a record for the near Moscow region (and M. O. it seems). This is not our beetle (or very rare). beer.gif
P.S. Well, yes, here it is definitely: http://www.zin.ru/Animalia/Coleoptera/rus/dyt_1402.htm
I was surprised, so surprised.

This post was edited by vasiliy-feoktistov-30.09.2010 20: 19
Likes: 1

30.09.2010 20:20, Necrocephalus

Did you catch it yourself?

30.09.2010 20:20, botanque

From beetles, the Buffoon (Cybister) in general, in my opinion, a record for the near Moscow region (and M. O. it seems). This is not our beetle (or very rare). beer.gif

I agree, the find is very interesting, in my opinion. As soon as I find out more , I'll write here.
Likes: 2

30.09.2010 20:22, Sungaya

Did you catch it yourself?

so exactly smile.gif

30.09.2010 20:26, Necrocephalus

Prkolno, pancake cool.gif cool.gif

30.09.2010 21:59, vasiliy-feoktistov

Prkolno, damn it cool.gif  cool.gif

Yes, really: it makes sense to go through the local reservoirs on this subject next year:

Pictures:
picture: Cybister.jpg
Cybister.jpg — (222.1к)

30.09.2010 22:12, botanque

Yes, really: it makes sense to go through the local reservoirs on this subject next year:

Perhaps it's not too late this year either. In Samara, in any case, I caught the latest cibister on October 19, when it was +5 degrees above the water all day.

30.09.2010 22:13, Sungaya

Yes, really: it makes sense to go through the local reservoirs on this subject next year:

by the way, he flew to the light

30.09.2010 22:20, vasiliy-feoktistov

by the way, he flew to the light

Well, it doesn't fly far, and beetles don't migrate (especially aquatic ones). It's somewhere in the vicinity.
There is a chance to find more in the nearby ponds.
Likes: 1

01.10.2010 10:54, botanque

From beetles, the Buffoon (Cybister) in general, in my opinion, a record for the near Moscow region (and M. O. it seems). This is not our beetle (or very rare). beer.gif
P.S. Well, yes, here it is definitely: http://www.zin.ru/Animalia/Coleoptera/rus/dyt_1402.htm
I was surprised, so surprised.

According to Oleg Brekhov. The find is certainly interesting, but not the first. Individual individuals may well fly into the MO. Now, if you had a lot of zibister in the crowd...

And more. According to both Oleg Brekhov and Vasily Dyadichko, it would be good to publish the find.

This post was edited by botanque - 01.10.2010 17: 59
Likes: 2

01.10.2010 18:26, Victor Titov

I'm a little late for the most interesting part! Briefly: both in D. marginalis and D. curcumcinctus females are ribbed and smooth (in the latter, smooth, according to my observations, occur more often than in the former). But Cybister lateralimarginalis for the Moscow region is a find, if not outstanding, then extremely (to put it mildly) interesting! Congratulations! beer.gif beer.gif beer.gif

This post was edited by Dmitrich - 01.10.2010 18: 27
Likes: 2

01.10.2010 20:59, Sungaya

I hope that:
1-all this is the same,
2-you will tell me what it is called smile.gif
and, if possible, the floor.

1-5-Kolomenskiy district, 24-25 July
6-Sergiev Posad district, 5-9 August
7-Sergiev Posad District, 1-3 August

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01.10.2010 21:15, botanque

All of these are under-colored Hydrochara caraboides. Just in case, check for a spike on the keel of the prothorax. And then, after tsybister and N. flavipes, you can expect smile.gif
Sex can be determined by the curve of the claws: in males, they are bent sharply, at a right or sharp angle, and in females - more smoothly or crescent-shaped.
Likes: 1

01.10.2010 21:41, Sungaya

All of these are under-colored Hydrochara caraboides. Just in case, check for a spike on the keel of the prothorax. And then, after tsybister and N. flavipes, you can expect smile.gif
Sex can be determined by the curve of the claws: in males, they are bent sharply, at a right or sharp angle, and in females - more smoothly or crescent-shaped.

Unfortunately, I do not know what this spike should be.
Here you can understand something?

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01.10.2010 22:04, botanque

Yes, these are caraboides.
And the spike looks like this:
picture: caraboides.jpg
Likes: 1

01.10.2010 22:08, Sungaya

and about the claws:
only one specimen has elongated claws, while all the others have curved ones.
That's what we're talking about, right?

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01.10.2010 22:11, botanque

Yes, that's right. Top - female, bottom-male.
Likes: 1

02.10.2010 0:12, Sungaya

getting smaller and smaller..
from left to right:
1-Kolomenskiy district July 28-29
2-Sergiev Posad district July 2-4
3 and 4 - Sergiev Posad district May 7-10

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02.10.2010 1:01, Victor Titov

getting smaller and smaller..
from left to right:
1-Kolomenskiy district July 28-29
2-Sergiev Posad district July 2-4
3 and 4 - Sergiev Posad district May 7-10

1, 3 and 4 (from left to right) - Ilybius fuliginosus (Fabricius, 1792). The second one, in my opinion, is also Ilybius, but I don't understand which one. Waiting for botanque.
Likes: 1

02.10.2010 1:35, Sungaya

and here's more
from left to right:
1 Sergiev Posad district, August 5-9
2 Sergiev Posad District, July 2-4
3 Kolomna District, July 24-25

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02.10.2010 10:15, botanque

Swimmers:
1, 3, 4-yes, Ilybius fuliginosus, 3 and 4-males (on the front legs), 1 is not visible.
2-it also seems to be ilibius, as a variant of subtilis female, but this is pure shamanism, they are generally difficult.

Water lovers Hydrobius fuscipes. On the claws (better than the front legs) of the female, it seems to me.
Likes: 1

02.10.2010 12:35, botanque

If possible, can you take a closer look at the floater from above and below? Especially the pronotum. Maybe I'll be more precise.

02.10.2010 12:58, Sungaya

Is it better this way?

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02.10.2010 13:17, botanque

Very similar to my I. subtilis.
Likes: 1

02.10.2010 13:36, Alexandr Rusinov

It is wink.gif
Likes: 1

02.10.2010 13:39, Sungaya

length about 4 mm
Moscow Region, Sergiev Posad district August 1-3

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