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Water beetles

Community and Forum → Insects images → Water beetles

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14.05.2016 22:33, AGG

Stas, what do you do with your laundry? solution / brush ? there is a feeling that the photos are in an aquatic environment. Is that true?

This post was edited by AGG-05/14/2016 22: 35

14.05.2016 23:32, botanque

I wash it simply in alcohol or ethyl acetate. Somewhere with dissecting needles, somewhere with paper strips. The brush for such a trifle is somehow not very suitable. I shoot dry beetles. The effect of the liquid can be a veil creates on the soap dish is removed.

15.05.2016 0:00, AGG

you shouldn't be talking about brushes. I use squirrel 00 and pony minimal, and then cut at an angle of 45 % to one bristle wink.gifhere is more a question in razmochke. I'm soaking in the water with the fae. alcohol tans. and EA gives an unnatural shine, which is used by many sellers of carbuses, the main thing is not to overdo it, otherwise it starts to eat out the pigment wink.gif

04.07.2016 17:10, botanque

Ochthebius (s.str.) foveolatus Germar, 1824

A new species for the Russian fauna. Details and other interesting things here.

picture: Ochthebius_foveolatus_1080ctr.jpg

This post was edited by botanque - 04.07.2016 18: 16
Likes: 11

08.08.2016 19:32, MIV

In a dirt trap on the bank of the reservoir climbed such a "monster", and even hisses when it is touched.

picture: 1_________________________________.________._4.08.16.jpg

picture: 2_________________________________.________._4.08.16....jpg

I think this is the larva of a water lover. Apparently crawled out to pupate. I put it in the wet sand for now. Tell me, please, how to remove an adult beetle? What is the substrate, humidity mode? Or even release it to the wild?

Sorry for the photo - I shot it in a hurry.

16.12.2016 11:46, vasiliy-feoktistov

Hydrophilus (Hydrophilus) aterrimus Eschscholtz, 1822 (pair)
(Hydrophilidae → Hydrophilinae → Hydrophilini)
19.05.2012 Orekhovo-Zuesky district, Moscow region, Russia. Poplar, on light. leg. Ponomarev A. G.
picture: Hydrophilus_aterrimus_male.jpg
picture: Hydrophilus_aterrimus_female.jpg
Likes: 7

05.05.2017 19:25, NakaRB

Enochrus quadripunctatus
17.06.2013, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 4

05.05.2017 19:27, NakaRB

Cercyon unipunctatus
31.05.2015, Novoki-Begichevo village, Serpukhov district, Moscow region, to light
user posted image
Likes: 4

05.05.2017 19:28, NakaRB

Cercyon marinus
04.05.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, to light
user posted image
Likes: 5

05.05.2017 19:29, NakaRB

Cercyon laminatus
26.06.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, to light
user posted image
Likes: 5

05.05.2017 19:31, NakaRB

Helochares obscurus
20.07.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 5

05.05.2017 19:33, NakaRB

Brychius elevatus
02.07.2012, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 6

05.05.2017 19:34, NakaRB

Helophorus brevipalpis
27.06.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, to light
user posted image
Likes: 5

05.05.2017 19:38, NakaRB

Hygrotus enneagrammus
12.03.2012, in a moth from a pet store
user posted image
Likes: 5

05.05.2017 19:40, NakaRB

Laccophilus hyalinus
12.08.2012, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image

This post was edited by NakaRB - 10.05.2017 17: 25
Likes: 6

05.05.2017 19:41, NakaRB

Hyphydrus ovatus
26.08.2012, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 4

05.05.2017 19:43, NakaRB

Hygrotus impressopunctatus
03.07.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 5

05.05.2017 19:44, NakaRB

Hygrotus decoratus
20.07.2016, Novoki-Begichevo village, Serpukhov district, Moscow region, Rechma river
user posted image
Likes: 8

12.12.2017 20:20, botanque

Deronectes abnormicollis Semenow, 1900
Male, length-5.2 mm.
Southern Kazakhstan, khr. Karatau. The species is quite common in those places in mountain watercourses.
The beetle is very worn. But since there are still no other photos of the view on the network, I decided not to delete this one smile.gif


picture: Deronectes.jpg
Likes: 8

20.01.2018 12:07, botanque

Actual list of Samara water specialists.
And in the photo:

Hydrochus megaphallus Berge Henegouwen, 1988, Samara region.
picture: hydrochus_megaphallus.jpg
Likes: 8

14.02.2018 13:45, kvoncstu

Dear colleagues! In connection with the discovery of Hydrophilus piceus in the Kirov region (https://nurgush.org/news/2018/01/22/obnaruzhen-novyj-vid-vodolyubov/#comment-3397) and mention of the Leningrad region (literature?) please express your opinion on the possible expansion of this southern species in the middle zone of Russia. If the information is correct.

This post was edited by kvoncstu - 02/14/2018 13: 48
Likes: 1

14.02.2018 14:47, botanque

The legend is fresh... There will be a photo of the Kirov copy - there will be something to discuss.

For the Leningrad Region, sources are listed in the Red Data Book of the Leningrad Region (2002). However, one sentence (p.137) from this CC causes complete distrust of them: the mid - and posterior thorax from below with a powerful keel passing into a spike behind, which distinguishes this species from the close H. aterrimus Esch. When asked who checked the definitions for the new edition of the CC, I didn't get a response from the people involved.

I would like to see reliable references to H. piceus finds in Fennoscandia.
Likes: 1

14.02.2018 14:57, kvoncstu

A weighty argument is the definition of the Kirov find by G. I. Yuferev.

14.02.2018 16:44, botanque

Yes, but still the facts weigh more heavily than the authorities. In this case, doubts are justified and only a photo can dispel them.

I join Vladislav's question. If forum users have found Hydrophilus piceus north of the Orenburg-Saratov-Voronezh region line, please post photos of the beetles (bottom view!) here. This will significantly clarify the issue of its distribution.
Likes: 1

14.02.2018 22:37, Evgenich

Stanislav, do I understand the difference between these two species correctly: Hydrophilus piceus has a keel on the last, distal segment, while H. aterrimus does not?

This post was edited by Evgenich - 02/14/2018 22: 39

14.02.2018 23:24, botanque

Alexander, here here all with illustrations.
Likes: 1

15.02.2018 13:37, Evgenich

Thank you, Stanislav. I examined my own people yesterday. There is no keel. I have everything - H. aterrimus
Likes: 1

22.03.2018 17:10, Grey Coleopter

I will enliven the topic a little, today I checked the installed traps of the "topshi" type in a small artificial reservoir: Crimea, Baydar Valley, okr. s. Ozernoye.

user posted imageuser posted image
Likes: 4

01.04.2018 23:20, botanque

Sandracottus maculatus (Wehncke, 1876)
male
Thailand, N. Dol Inhanon, 1400-1800 m, 9-10. 08. 2009, S. Murzin leg.
Length-15 mm

picture: Sandracottus.jpg
Likes: 9

31.10.2018 22:12, botanque

Helophorus (Rhopalohelophorus) salinus Angus et Litovkin, 2018

Paratype.
Male, length 3.0 mm.
Kazakhstan, Zhambyl region, north-eastern foothills of the khr. Karatau, 13.05.2015, Litovkin village leg.

I don't know if the article with the description will be publicly available. If you are interested-write in PM or on the soap.

picture: Helophorus_salinus.jpg
Likes: 11

06.08.2019 23:55, botanque

Solved the same Elmida with fourth page.

Now Stenelmis koreana Sato, 1978 It is found in Western Siberia and Central Asia.

Original label: Kemerovo region, 8 km SSW Saltymakovo, KemSU biostation "Azhendarovo", 24. VII. 2009, leg. A. Korshunov. The article is slightly adjusted to fit the map.

picture: Stenelmis_koreana_Sib.jpg
Likes: 6

12.10.2019 9:55, botanque

Helophorus (s.str.) robustus Angus, Litovkin et Jia, 2019

Paratype.
Male, length 6.0 mm.
Kazakhstan, Zhambyl region, Karatau region, 13 km ENE Baizhansai, 43.21311°N 70.06798°E, 915 m, slow stream with silty-gravel bottom, 29-30.V.2015, Litovkin village leg.

An article describing two new species and the most complete (21 species) and fully illustrated keys for the subgenus Helophorus (s. str.) will soon be available in the public domain.

picture: H_robustus_1080.jpg
Likes: 14

12.10.2019 10:10, AGG

Likes: 1

13.10.2019 16:24, botanque

20.06.2020 9:18, bulatnazmiev

Probably someone kept floating beetles here. How long is their life span? I read somewhere that they live up to 4 years

22.06.2020 1:01, vidjl

Probably someone kept floating beetles here. How long is their life span? I read somewhere that they live up to 4 years

Up to 4 I don't know, but up to two and a half at home I reach

22.06.2020 22:20, bulatnazmiev

Is it really possible to get a floating beetle from the larva? What is the best way to feed? I once tried a long time ago, but the larva died (gave tadpoles).

23.06.2020 13:15, ИНО

http://myreptile.ru/forum/index.php?topic=3941.0

11.02.2021 20:13, botanque

Eumetopus flavidulus (Sharp, 1890)
India, Andhra Pradesh.
Male, 2.6 mm long.

Beatle on the previous page In fact, Eumetopus maindroni (Régimbart, 1903).

More details in a recent review of the Epimetopidae family.

picture: E_flavidulus.jpg
Likes: 10

22.06.2021 11:58, botanque

A fresh review has been published Aquariums of the subgenus Lumetus Zaitzev (Coleoptera, Hydrophilidae: Enochrus Thomson) from the fauna of Russia and neighboring countries
If you are interested, please send us an email (see the link above).

The photos show not only the Lumetus subgenus, but also three others. Views from left to right, top to bottom: Enochrus melanocephalus, E. nigritus, E. simulans, E. turanicus, E. bicolor, E. segmentinotatus, E. hamifer, E. ater, E. ochropterus. Ruler 2 mm.

picture: Enochrus_spp.jpg
Likes: 9

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