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Features of light catching

Community and ForumEntomological collectionsFeatures of light catching

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16.08.2016 15:51, Barnaba

It is believed that the main role in attracting insects is played by light in the range of 350-380nm, which is not usually visible to the human eye (personally, I see light from 375nm, and this is no exception, but the perception is peculiar, it is not possible to observe in this light). But, in my experience, a certain positive role is played by a shorter-wavelength UV in the range of 320-350nm. Harder UV is extremely harmful and does not give much benefit. Again in my experience, visible light (from 400nm) as such, it does not play a visible role in attracting light, but here you need to take into account that at a given power, most sources emit significantly more light in the visible region and it spreads better. Therefore, if you compare sources with the same radiation intensity in the invisible region, but with very different ones in the visible one, a source with a higher visible light intensity will attract more light, because it is more visible from a distance. In addition, a certain amount of visible light is desirable for the convenience of working with the screen, although a good frontal flashlight is often enough.
As for the screen material, in my experience, the best results are given by a special perforated fabric that reflects UV. It stretches and resists wind loads well. An ordinary sheet or a synthetic analog is not bad, but the screen is blown away in the wind. Nonwoven agrotextile is initially worse and becomes even worse with repeated use, as it gets dirty easily. At the same time, it burns. I use it as a bottom cloth and periodically replace it, since it's cheap. The worst window mesh works, which has the lowest reflectivity, but it can work in strong winds. In general, all the differences in the screen material are not so significant compared to the choice of light source, and they are more pronounced the weaker the source.
Likes: 1

16.08.2016 22:45, Romanov2000

Yes, with a pricked DRL and even on the balcony, of course, I don't really want to work. I will try it in the field. But the perforated fabric reflecting UV met in the Internet, you need to look!

16.08.2016 23:02, Barnaba

Yes, with a pricked DRL and even on the balcony, of course, I don't really want to work. I will try it in the field. But the perforated fabric reflecting UV met in the Internet, you need to look!

I use mostly this one. There are also other types of fabrics, as well as a very convenient reflective tape to mark the right places on the ground (traps, etc.). On the one hand, it is reflective and shines like a powerful diode in the flashlight beam at night, and on the other hand, it is orange, so it is clearly visible during the day.
Likes: 1

16.08.2016 23:30, ИНО

Not just on the topic of fishing for light, but somewhere nearby. It came recently from the fields. I stayed until it was dark on the slope of a ravine overgrown with blooming Siberian glover. What a lot of moths there were! I used to meet such a large number and variety only under the lamps. The scoop has at least a dozen species, and I saw half of them for the first time, several species of moth moth hawkmoth are huge. And if you stand for more than 15 minutes, then probably someone else interesting would have flown in. So, about the light. To take photos, I illuminated them with an LED flashlight. Different species reacted differently to the beam. The moths were quiet, and so were some types of scoops. Others, having hit the beam, immediately took off and began to circle in it, which is why, for example, metallovidok could not take a picture, although he saw it clearly. And with every minute that passed after sunset, the light irritated the butterflies more and more, despite the full moon, by nine in the evening it was impossible to take pictures at all, I had to leave. But if I didIf I were to collect a collection of butterflies, then I would probably have collected more per night than from the screen with DRL/DRV with the average summer, and, again, the variety was quite large, for obvious reasons only afags were missing. So, if you want to go fishing in the steppe, it's time to look for a similar place (of course, it's better to do it in advance, in the daytime). On the way back, I walked through an oak forest. It has its own species of scoops, apparently indifferent to the nectar of flowers, so on the slope of the beams that were completely absent, obviously, they feed only on the sap of trees. The light of my flashlight disturbed these people very much, but they all flew away from it.

17.08.2016 0:27, Hierophis

17.08.2016 0:36, ИНО

So it is, I described it from Donetsk, but I called it Siberian, because I consider the Donbass part of Siberia!

But in fact, I just forgot a little, Siberia begins immediately from the Urals,so there is almost no geographical contradiction. But since Pan Stepovoi already got into this topic with trolling, I'll ask the question: did he use this method of catching a scoop for his legendary collection of the century, or did the babai lurking in the dark interfere, and I had to catch everyone on the balcony in the light of the DRL?

This post was edited by ENO - 17.08.2016 00: 38

17.08.2016 14:05, Romanov2000

Not just on the topic of fishing for light, but somewhere nearby. It came recently from the fields. I stayed until it was dark on the slope of a ravine overgrown with blooming Siberian glover. What a lot of moths there were! I used to meet such a large number and variety only under the lamps. The scoop has at least a dozen species, and I saw half of them for the first time, several species of moth moth hawkmoth are huge. And if you stand for more than 15 minutes, then probably someone else interesting would have flown in. So, about the light. To take photos, I illuminated them with an LED flashlight. Different species reacted differently to the beam. The moths were quiet, and so were some types of scoops. Others, having hit the beam, immediately took off and began to circle in it, which is why, for example, metallovidok could not take a picture, although he saw it clearly. And with every minute that passed after sunset, the light irritated the butterflies more and more, despite the full moon, by nine in the evening it was impossible to take pictures at all, I had to leave. But if I didIf I were to collect a collection of butterflies, then I would probably have collected more per night than from the screen with DRL/DRV with the average summer, and, again, the variety was quite large, for obvious reasons only afags were missing. So, if you want to go fishing in the steppe, it's time to look for a similar place (of course, it's better to do it in advance, in the daytime). On the way back, I walked through an oak forest. It has its own species of scoops, apparently indifferent to the nectar of flowers, so on the slope of the beams that were completely absent, obviously, they feed only on the sap of trees. The light of my flashlight disturbed these people very much, but they all flew away from it.

Dear ENO, I don't know about golovchatka because I haven't met her, but I completely agree with you on the example of lilac. At my dacha in the field there is a huge bush 5 meters in height and, accordingly, very wide. So in the evenings, especially before the rain, it's just swarming. It's a pity that it's very high and difficult to catch, but that's not the point. When highlighted on some of them some species behave as if nothing has happened some shied away like mad! You write that the milkweed hawkmoth you have there is huge. Are they a nominative or a subspecies in your region? They brought me podmarennikovs from your places, so they are twice as large as the Moscow region ones. Also probably a subspecies, although I'm not sure.
Likes: 1

17.08.2016 14:28, ИНО

Golovchatka is more interesting than lilac and other cultivated plants in the sense that it grows in a remote steppe, respectively, and the species there are not urban. In addition, now the entire steppe has burned out, there is little flowering and the thickets of golovchatka are a lighthouse, to which various bees and mace-whiskered lepidoptera are drawn during the day, and at night - raznous ones. I can't say anything about the subspecies of hawkmoth-I don't understand it. In general, subspecies of butterflies - in my opinion, the thing is very controversial and often speculative, as well as subspecies of large beetles. For some reason, in less popular groups of insects among collectors, subspecies are distinguished many times less. But the size of milkweed hawkmoth is very variable, by weight twice. Now I have measured two specimens from my collection, a small one - 7 cm in wingspan, a large one - 9. But it is from the Crimea. However, last night, individuals of just such a Crimean caliber flew, maybe even more. The grasses rustled noticeably under their touch, at first it seemed that rodents were running around. Smaller ones were caught in October on the flowers of the soapberry (the last thing then from the rich nectaros). I didn't find any differences in the color scheme. I know in the Crimea there is a separate species that differs quite a bit in the pattern of the wings, but I have never personally seen it.

17.08.2016 16:10, Romanov2000

Golovchatka is more interesting than lilac and other cultivated plants in the sense that it grows in a remote steppe, respectively, and the species there are not urban. In addition, now the entire steppe has burned out, there is little flowering and the thickets of golovchatka are a lighthouse, to which various bees and mace-whiskered lepidoptera are drawn during the day, and at night - raznous ones. I can't say anything about the subspecies of hawkmoth-I don't understand it. In general, subspecies of butterflies - in my opinion, the thing is very controversial and often speculative, as well as subspecies of large beetles. For some reason, in less popular groups of insects among collectors, subspecies are distinguished many times less. But the size of milkweed hawkmoth is very variable, by weight twice. Now I have measured two specimens from my collection, a small one - 7 cm in wingspan, a large one - 9. But it is from the Crimea. However, last night, individuals of just such a Crimean caliber flew, maybe even more. The grasses rustled noticeably under their touch, at first it seemed that rodents were running around. Smaller ones were caught in October on the flowers of the soapberry (the last thing then from the rich nectaros). I didn't find any differences in the color scheme. I know in the Crimea there is a separate species that differs quite a bit in the pattern of the wings, but I have never personally seen it.

I have an interesting form, but it's kind of not for this topic. If you want, I'll send you a photo by email for example.

17.08.2016 16:20, ИНО

No, interesting forms of butterflies are not for me. Let's get some interesting os forms!

17.08.2016 16:33, Romanov2000

No, interesting forms of butterflies are not for me. Let's have better interesting os forms!

Alas, I only know them by their bites! smile.gif

01.09.2016 17:55, PhilGri

Friends, here is a question.
There is a hiking mast of three meters. There is an entomosphinx screen (the lamp height is very small - about one and a half meters from the ground). There are split DRL 250 and DRL 125 and regular DRL 250 and 125.
I understand correctly that a good way to do this (especially in bad weather or with limited visibility around) is as follows:
- Light the split DRL 250 on the mast and go for cover.
Butterflies will flock together from afar and settle down nearby in the grass or on a mast.
- After 40 minutes, cut down the stab and turn on the DRL 125 on the screen.
Butterflies will be drawn to the screen.
- Repeat these cycles further.
If the idea is good, then where is it better to place the mast-right next to the screen or 10-15 meters away?

02.09.2016 1:27, Barnaba

And why not leave the lamp on the screen always on? Let at least some of those attracted sit directly on the screen, especially immediately after the stab is turned off. They will partially fly up and land again. I did this by placing a direct screen with its own light (DRL125+UF26KLL) measuring 2. 5x1. 8 m and a wide geotextile mat (3x3m) directly under a powerful UV lamp (similar to DRL, but BL 250W) placed at a height of ~3m. This lamp is much less dangerous than a split one, and gives almost no visible light. For greater convenience, a cover made of a tin can with a diameter of approx.20cm and approx. 30cm high, with the walls cut almost to the bottom by about 270 degrees, and a hole made in the bottom for the cartridge. The ceiling lamp was attached to the lamp with the bottom up, the cutout in the direction from which I wanted to draw, and in the shadow of the remaining sector of the ceiling lamp, at a sufficient distance, there was my chair and work table wink.gif. At the same time - protection of the lamp holder from precipitation. I collected beetles, but there were usually a lot more butterflies. The Entosphinx screen is certainly less convenient for this than a straight one, but it will work only if you take a wider litter, otherwise a lot will be lost in the grass. The advantage of the constant light on the screen directly under the UV lamp is that you can basically see when and what has arrived, and you can turn off hard UV at any time and go collect.
Likes: 1

02.09.2016 2:43, PhilGri

Thanks!
OK, I can light the DRL 125 on the screen plus the beater 250 on the mast, the generator pulls.
The question is whether this will be able to attract at least some of the butterflies to the screen. Let's check it out.
When the DRL 125 is punctured at a height of 3 m, I sit 5-6 meters from the mast, periodically look at the screen without catching the lamp with my eye, and sometimes I go to the screen for butterflies in closed clothes and a hat. So far, there have been no problems with the eyes or skin. But with a stab DRL 250, it's even kind of scary for me to look at the screen under the mast. After all, I get the reflected part of the UV in my eyes, right? Or too afraid?

This post was edited by PhilGri - 02.09.2016 03: 19

02.09.2016 9:58, ИНО

Try glass glasses.

03.09.2016 12:18, Barnaba

It is better to use special safety glasses for working with laminars and other sources of UV radiation in laboratories. The lenses in them are plastic, yellowish-brown in color, reliably protect from UV and increase the contrast of objects, although they distort colors. With good glasses of this type, you can actually work with the screen, even if they are worn over ordinary optical glasses. For black Light (BL), ordinary optical glasses or sunglasses are sufficient.
Split DRL is potentially very dangerous, since a significant part of its radiation is hard UV with a wavelength of 180-290nm (peaks of 185 and 255nm), which has a variety of damaging effects on living organisms. Since the power is large, the effect is very strong. In a whole lamp, this UV is largely converted by the phosphor into longer-wavelength light, including visible light, and the remainder is cut off by the glass of the bulb. The attractive effect of this particular short-wave and dangerous part of the spectrum is doubtful both because of the damaging effect on the receiving devices of insects themselves, and because normally more than 99% of this light is not transmitted by the atmosphere. But it is a concomitant part of a rather powerful radiation in the longer wavelength range. The main attractive effect, in my opinion, is provided by the next peak of radiation in mercury vapor (about 365nm). This radiation is present in natural light and is almost safe (with minimal precautions).
I used split DRL 400s for light fishing at the beginning of my activity, in the late 80s - early 90s, as many people used them, the effect of attraction is noticeable, and there were no analogues. I used them regularly in another area (stimulation of cycles in reptiles during terrarium maintenance), but this was less dangerous, since the exposure time is short. At the same time, I tried to always observe the utmost accuracy, but I got vision problems a couple of times. Over time, having seen enough of the various effects of their action, both on humans and on animals, I abandoned them when fishing for light even before the appearance of analogues, and now even more so. Quieter you go, longer you will be.

04.09.2016 2:07, Bad Den

Try glass glasses.

Alas, they do not help-no,no, and you will catch radiation. I wear glasses myself.

04.09.2016 5:01, ИНО

But it's still better than without them, isn't it?

04.09.2016 8:51, Bad Den

But it's still better than without them, isn't it?

Due to the fact that I have myopia - I didn't try without them smile.gif

05.09.2016 16:35, PhilGri

Friends, such a question.
Given: a place where the arrival of butterflies from all directions is approximately equally possible.
Question. which is better: a low four-petaled screen from Entosphinx (round, which is larger, not a pyramid) with a lamp height of about one and a half meters from the ground, or a flat screen of the "sheet" type, but with a higher lamp location (2-2. 5 meters from the ground)?
In other words: what is more important - to place the light higher and cover a large area with it, or to have a screen with four petals, on which everything that has arrived from all directions is better delayed?

05.09.2016 16:57, Alexandr Zhakov

The light source is more important than the screen.
A light source at a height of 2-2. 5 meters does not allow access to all insects that have clung to the light. and if in the zone of inaccessibility sat down the most that is necessary, then the circus begins.
A flat screen can have lamps on both sides and provide a 360-degree view. But the petal screen has a higher percentage of insect detentions.
from the suggested options, I would choose a petal screen.
Likes: 1

05.09.2016 18:54, Синицын Валерий

Drugi, today faced with a "miracle"! And it was like this: my good old DRL-400 produced by filips, similar to the "tit" size etok 6-7, crashed in a gust of wind. I didn't grieve much, but I bought a native "import substitution" DRL-400 in the nearest store... the size of a"cam"! This incident in itself did not upset me much( as a fan of large forms), but on the other hand, I was pleased with the saving of space in my backpack.
And so, overwhelmed by opposite feelings, I lit up a brand-new lamp at the dacha in the MOST GORGEOUS! from an entomological point of view, the night is warm! It's dark! the rain is dripping! in general, a fairy tale! Then the butterflies flew in... I'm sitting here waiting for it to get dark. It was getting dark... And some bullshit started!... My beloved, long-awaited ones arrive, hit the screen with all their might, hit the ground again on the screen and disappear to the borders of light! I didn't have time to snatch a net - goodbye, don't get bored! I spent half the night catching something. Butterflies fly, scoops, hawks, bears-the screen is EMPTY! Literally 3-4 spans! Okay, I think maybe it's a night like this. The next time a few days later, the same picture arrived again! They fly in and hide away at a crazy pace! Or they crawl under the screen, or they get clogged in the cracks, or they fade out of the light limit, and the screen is empty! I threw up my hands and spat on this case! I will search for filips!

05.09.2016 19:13, Alexandr Zhakov

Drugi, today faced with a "miracle"! And it was like this: my good old DRL-400 produced by filips, similar to the "tit" size etok 6-7, crashed in a gust of wind. I didn't grieve much, but I bought a native "import substitution" DRL-400 in the nearest store... the size of a"cam"! This incident in itself did not upset me much( as a fan of large forms), but on the other hand, I was pleased with the saving of space in my backpack.

And if it is possible to link to such an interesting product. After all, DRL-400 is the same size for any manufacturer, only it is called differently. Maybe you bought something else ?

05.09.2016 19:33, Синицын Валерий

Ten times I checked the DRL-400 and DRL-250 of the same size, but I think the spectrum is not much different judging by the reaction of insects. Send a link after September 10, when I'm home.
Likes: 1

05.09.2016 21:32, Василий пенза

The last 2 times the DRL 250 of a non-standard size shone, I don't remember exactly which company, but its size is equal to the drl 125. But I didn't seem to see such a negative effect.

05.09.2016 21:41, Barnaba

Russian-made DRL (Lisma) is now much worse at attracting customers than imported Osram, Philips, and even GE. At 400W, they are noticeably smaller than imported ones, but not "with a cam", the difference is 30 millimeters for each measurement. I saw some other Chinese lamps, about the same size as Lisma, but I didn't even try them. There could also be a low voltage on the lamp due to contact (+humidity), or because of the power source, then the lamp pulsates and this dramatically reduces the effect. But if the size of the lamp is noticeably different, most likely it's the lamp. It would be interesting to see. There will be no Philips, feel free to take Osram HQL 400W, it is imho even better for our purposes.

06.09.2016 0:21, PhilGri

Interesting. Purely intuitively, I chose Lisma. Osrams and Phillips have a more" yellow "light, while Lismas have a more "white" light.
DRL 250 from Lisma is smaller in size than similar Osrams and Philips.

Russian-made DRL (Lisma) is now much worse at attracting customers than imported Osram, Philips, and even GE. At 400W, they are noticeably smaller than imported ones, but not "with a cam", the difference is 30 millimeters for each measurement. I saw some other Chinese lamps, about the same size as Lisma, but I didn't even try them. There could also be a low voltage on the lamp due to contact (+humidity), or because of the power source, then the lamp pulsates and this dramatically reduces the effect. But if the size of the lamp is noticeably different, most likely it's the lamp. It would be interesting to see. There will be no Philips, feel free to take Osram HQL 400W, it is imho even better for our purposes.


This post was edited by PhilGri - 06.09.2016 00: 23

06.09.2016 18:22, Barnaba

Interesting. Purely intuitively, I chose Lisma. Osrams and Phillips have a more" yellow "light, while Lismas have a more "white" light.
DRL 250 from Lisma is smaller in size than similar Osrams and Philips.

The declared color temperatures of DRL lamps for general use differ little from different manufacturers and, due to the characteristics of the device and the materials used, should be in the range of 3500-4500K. So, for 250W lamps Osram HQL and Philips HPL-N declared 4200K, for GE H 4000K. Lisma does not provide this data on the site, but the documentation previously attached to the lamps indicated 4000K. It turns out, on the contrary, theoretically, the first two light is more close to" white " (5400-6500K). These same two lamps, in my opinion, are the best in terms of attraction, better than GE and much better than Lisma. It is unlikely that the differences in luminescence visible to the eye are related to the color temperature as such (this is an integral descriptive value), rather, with some difference in individual parts of the radiation spectrum of lamps and, possibly, different individual perception of different parts of the spectrum by the observer (i.e., objective + subjective). For example, I can see some differences between Osram and Philips, even though their stated color temperature is the same. This is indirectly confirmed by some differences in attracting different groups of insects to these two lamps. But if Lisma looks very different (I don't remember, I haven't used it for several years), then you should think about how much the declared value corresponds to the observed value.
The size of lamps of 250 W differs less than for 400 W (for Lisma 210x76mm, for the rest 228-227x90-91mm), and the size of the bulb itself is unlikely to matter for attraction.
In terms of total luminous flux, the stated differences are insignificant. For 250W lamps, for example, from 12000lm for Lisma to 13000lm for Osram and GE. I did not find sufficient data to correctly compare the luminous flux for different spectrum ranges for lamps of different manufacturers (I believe this is their conscious policy), and I do not have the ability to correctly measure it. I was not even able to understand from the technical descriptions whether special mercury lamps Blacklight (say, Sylvania HSW) actually emit more in the region up to 400 nm than conventional DRL of the same power, but in my opinion the effect on beetles is significant, and entomologists use them abroad, especially in the USA. By the way, a good alternative to "beaters", I already wrote somewhere.
Likes: 1

01.10.2016 20:08, Евгений88

Friends do you have a point in buying?drl 250 and uv economy will pull?picture: 958428.jpg

01.10.2016 23:08, Andrey Ponomarev

Friends do you have a point in buying?drl 250 and uv economy will pull?picture: 958428.jpg

I have the same, pulls 2 DRL 250 if you include them with an interval of 3 min.

03.10.2016 18:58, PhilGri

I have one, very happy.
It pulls the DRL 250 and DRL 125 together without any problems, you just need to run them separately. If you connect two UV-saving lamps at once with the DRL 250 already burning, the DRL-ka goes out for some reason. Output: when the DRL 250 is already lit, first light one seberegayku, and after half a minute - the second. And so-perfectly pulls.

Friends do you have a point in buying?drl 250 and uv economy will pull?picture: 958428.jpg

03.10.2016 23:37, Евгений88

Thank you friends for the advice just arrived from night fishing och liked the generator!!!
Likes: 1

04.10.2016 11:16, Норд

Drugi, today faced with a "miracle"! And it was like this: my good old DRL-400 produced by filips, similar to the "tit" size etok 6-7, crashed in a gust of wind. I didn't grieve much, but I bought a native "import substitution" DRL-400 in the nearest store... the size of a"cam"! This incident in itself did not upset me much( as a fan of large forms), but on the other hand, I was pleased with the saving of space in my backpack.
And so, overwhelmed by opposite feelings, I lit up a brand-new lamp at the dacha in the MOST GORGEOUS! from an entomological point of view, the night is warm! It's dark! the rain is dripping! in general, a fairy tale! Then the butterflies flew in... I'm sitting here waiting for it to get dark. It was getting dark... And some bullshit started!... My beloved, long-awaited ones arrive, hit the screen with all their might, hit the ground again on the screen and disappear to the borders of light! I didn't have time to snatch a net - goodbye, don't get bored! I spent half the night catching something. Butterflies fly, scoops, hawks, bears-the screen is EMPTY! Literally 3-4 spans! Okay, I think maybe it's a night like this. The next time a few days later, the same picture arrived again! They fly in and hide away at a crazy pace! Or they crawl under the screen, or they get clogged in the cracks, or they fade out of the light limit, and the screen is empty! I threw up my hands and spat on this case! I will search for filips!


I had a similar situation with the Lisma 250, butterflies were clogged under the screen cover,under the backpack (which was lying nearby) in isolated cases they landed on the screen

04.03.2017 23:21, Wave Storm

Does anyone have butterflies flying around yet? Just today I was in Balka (Kherson region), shone a little more than half an hour, but froze, steam was coming from my mouth, and no one arrived, although the temperature was clearly in the region of 10-8 gr. However, I did not bother with the location of the canvas and the sky was clear. But I think that if there were years, then it would be weak, but it would be. But I definitely saw a scoop-shaped flying creature in the light of my phone's flashlight, but only once during the evening. No other insects were flying, either. I started with the sun at the bottom of the slope, then moved a little higher.
On the way back, I stopped at a huge LED lamp in the city in the park, there is also nothing there, and in November it flew there.

And during the day it seemed that it was very hot. And back I rode on a bike and in a jacket, and in a jacket.

Photos from your phone are taken in the dark, so the quality is appropriate.

picture: 20170304_180646.jpg
picture: 20170304_182530.jpg
picture: 20170304_183216.jpg

This post was edited by Wave Storm-04.03.2017 23: 22
Likes: 8

05.03.2017 18:54, ИНО

The only butterfly I have seen so far this year was no more than 1.5 mm in length:

picture: _____934.jpg

We don't have any other lepidoptera flying around here, at least during the day, and I've had a good look in the right places, where nymphalids usually flutter around since the end of February.
Likes: 1

05.03.2017 20:21, EvgenD

Does anyone have butterflies flying around yet?

In March, I haven't checked it yet, but on January 1, we had a small thaw in Vitebsk and I lit DRV-160 on one side of the house and DRL - 250 on the other for fun. From 18.00 to 19.30 (the temperature was about +1...+2), 2 Conistra vaccinii and 3 Eupsilia transversa arrived. A few days later, snowfalls and frosts began, and the next chance was presented only on February 18. But the temperature was near zero, and a light drizzle to boot. The lamps burned for 3 hours, but there was not a single butterfly, only some diptera sat and crawled away.
So different scoops, wintering at the stage of imago, you now can even fly. And those that come out of pupae in the spring, I don't know how in the Kherson region, but we, in the north of Belarus, are unlikely to have already appeared. Today we wandered outside the city on the most heated edges and slopes, even Archiearis parthenias was not seen. Maybe it didn't fly out yet, or maybe the sun was slightly warm today. But I found the caterpillar Hyphoraia aulica.
Likes: 1

05.03.2017 21:37, Wave Storm

Oh yes, I forgot to write that I was shining with an LED strip, 2 meters with a total power of 28.8 W, white cold.

It seems that they wrote here that they fly better to yellow in early spring and late autumn.

05.03.2017 22:06, EvgenD

Oh yes, I forgot to write that I was shining with an LED strip, 2 meters with a total power of 28.8 W, white cold.

It seems that they wrote here that they fly better to yellow in early spring and late autumn.


Maybe it also depends on the power. I usually catch on DRL/DRV-250. In early spring and late autumn, there are such cold nights when almost nothing flies on them. And even more so for 8-watt fluorescent tubes. To the south, maybe the situation is different, I don't know. But at +8 at night in spring in Belarus, I am sure that if there are butterflies, they will come.
Likes: 2

09.03.2017 23:04, ИНО

Butterflies of a normal caliber began to fly slowly: moths, moths, fireflies, and even polychromats. But so far very few, single instances.

10.03.2017 9:54, Alexandr Zhakov

Fans of clogging up topics smile.gif
The topic is called: Features of fishing in the light
and it discusses exactly the features of fishing for light: which lamps to use, how to find the best ratio of these lamps, what is the height of the lamp from the ground, which generator is better to buy, etc
.And what flew and what hatched, it is better to show in the branch "Reports on trips and expeditions", in the relevant topics.
Likes: 3

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Curators: Konstantin Efetov, Vasiliy Feoktistov, Svyatoslav Knyazev, Evgeny Komarov, Stan Korb, Alexander Zhakov.

Moderators: Vasiliy Feoktistov, Evgeny Komarov, Dmitriy Pozhogin, Alexandr Zhakov.

Thanks to all authors, who publish materials on the website.

© Insects catalog Insecta.pro, 2007—2024.

Species catalog enables to sort by characteristics such as expansion, flight time, etc..

Photos of representatives Insecta.

Detailed insects classification with references list.

Few themed publications and a living blog.