How to remove a beetle from a pupa or larva?

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Guest, 09.08.2006 22:23

Today I took a small trip to the pine forest, caught something, we need to determine. In particular, under the bark of pine stumps, I found several pupae of barbels. Pupae are pale and soft. When you disturb them, they start to move their belly indignantly. Together with the pupae, I took wood dust from under the pine bark to arrange for them at home at least something similar to their natural habitat. So, I put this dust in a half-liter jar, put the pupae on it,and lightly sprinkled them with dust on top. I thought about putting gauze over the top of the jar, but then it occurred to me that if the thick pine bark doesn't interfere with hatching beetles in nature, then the gauze obviously won't hold them back. I closed the jar with a thick plastic lid with a large number of small holes (so that air passes through). Here's what I'd like to know: what do my pupae need to hatch into full-fledged beetles? Is it enough just to leave them alone, as they are, and wait for the appearance of beetles, or do you need to make sure that the layer of rot does not dry out (and it is quite thin - I thought I gained more, but it turned out only about 2 cm), does not get moldy, etc.? I have already bred some beetles from pupae (softlings, ladybirds), but in all cases the pupae were covered with dense, colored cuticle, and not soft and pale like these. And also: will my beetles hatch (if they don't die) this year, or will they need to be allowed to freeze in the winter to be born next year???

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10.08.2006 20:21, Necrocephalus

Yes, the antennae are just like that, long and curled up in rings - in two pupae. They also have the back of the body elongated into an oblong transparent process. Three more pupae have short antennae, I think they are pupae of some kind of barbel like Strangalina or Strangalia, they are quite common in my area. Of course, I would like at least one pupa to give me a full-fledged long-moustached woodcutter, I don't have it in my collection.
Something has been lucky for me lately for all sorts of larvae and pupae

Today I caught a hefty staphylin larva on the field road, judging by the size and appearance, this is the larva of Staphylinus olens. I also don't have this in my collection, so I'm thinking about how to properly bring it to the imago: I probably need to feed it with insects (or can I eat meat?), to the dump, I want the staphylin to turn out fatter

. No one knows where she prefers to pupate? In the ground, or just in some suitable shelter? Does it need diapause to develop?

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17.08.2006 19:24, Guest

Yes, the method is good, you can try it in action

So you can also remove subcutaneous larvae of barbels and goldenrods, but you only need to take larvae of older ages. I myself bred Phaenops cyanea in this way.

Elizar, if it is not difficult for you, please describe what the larva of Phaenops cyanea looks like? And what size (approximately) do the larvae of older ages reach (I ask, so as not to take "undersized" ones, which I can't bring out and will only ruin in vain)? The fact is that I am experiencing an acute shortage of goldsmiths in my collection

of the same barbels, there are already about 20 precisely defined pre-species, and so far only one goldsmiths, and even then quite nondescript-Anthaxia quadripunctata. When I was looking for insects, I tore off the bark from pine stumps in the forest, then under the bark I often found "lozhnoprovolochnikov" with a length of about 1.5, maximum 2 centimeters. Are these the larvae of Phaenops cyanea?

They were a rich yellow color with a darker head.
And also, a question for everyone: people, can you tell me how to catch Chalcophora mariana? Is it found in relatively young, artificially planted pine forests, or is it given old, natural pine forests? Is there a specific time in the year when it is most likely to be found, or can it be found throughout the warm season? I really want to catch this beauty, please guide me on the right path

18.08.2006 7:45, Dmitry Vlasov

2Necrocephalus
"Lozhnoprovolochniki " most likely it is the larvae of nutcrackers, especially if the stumps of pine trees are old. The larva of Phaenops cyanea is a typical "goldilocks" species - i.e., with a very strongly expanded prothorax. They develop on drying pines with yellow or brown needles that have not yet fallen. They are common on small trees under thin or transitional bark. Beetles can be caught in June and the first half of July on the trunks of standing or recumbent pines warmed by the sun. I bred the beetle from the larva not so much for collection, but for scientific purposes...It's better to just catch the bug and not bother. And if you remove them from the larvae, then take them in the spring, after overwintering.
Chalcophora mariana is found only in old pine forests with tall and thick trees. Most often occurs in June-July. Here in the Yaroslavl region. it is very local and I did not catch it myself... But, those who caught said that they saw over stacks of logs and it flies rather clumsily. You have in the Kursk region . there should be a lot of golden flowers growing on deciduous trees as well.

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30.11.2006 17:48, Guest

About a month ago, to my horror, I discovered that one of the boxes with insects on the mattresses had a leatherworm. When I examined the damage in detail, I came across a small furry larva, which I did not kill, deciding to remove the beetle from it, for the sake of interest. In the end, I managed to get rid of the leatherworm with the help of a two-week promo-freeze of the infected box in the freezer, but now we are not talking about this, but about the larva

In general, I put her in a tightly closed jar (so as not to escape) and threw her a few non

-valuable dry insects, pre-crumbled, so that it was easier for her to eat them. For three weeks she thrived, getting fatter every day, but when she reached the size of 3 mm, she lost her peace. For several days now (almost a week), it does not eat, does not grow, but only crawls back and forth on the jar. If the larva were large, it could be assumed that it needs a substrate for pupation (since, according to Zhantiev, the larvae of beetles of the genus Dermestes prefer to gnaw out their pupal "cradle" in a suitable substrate). But the larva, as I have already mentioned, reaches only 3 mm, and most likely belongs to the genus Attagenus, whose representatives, in theory, do not need a special substrate for pupation and are content with the environment that they feed on (and there are a lot of dry insects in the jar - 3 large chopped beetles).

Question: What can this restless maggot lack? Why did she stop feeding and loiter around the jar, not wanting to pupate? By the way, the humidity in the jar is minimal (which, it seems, is favorable for skin eaters, given their xerophilic nature).

02.04.2007 20:49, Necrocephalus

There was a question about the breeding of bark beetles from larvae: at the weekend I found an alder tree in the forest (I think I can't say it more precisely, because I'm not a botanist - I have to wait until the leaves bloom) that was affected by the bark beetle. There were a lot of plump larvae that can only belong to bark beetles in the thickness of its bark, plus I found a few dead and dry beetles. I decided to try to breed bark beetles and took a few pieces of bark with larvae with me, and now I'm thinking about how I can get them out with minimal losses: are there any nuances? Will it be enough to just put the bark in a jar and wait for the beetles to hatch? Do I need to moisturize, and if so, how often?
I think there are people on the forum who have already bred bark beetles. Please share your experience

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18.07.2007 16:37, RippeR

I advise you to first look for topics about breeding beetles, like something like this was.. And then ask more specific questions, since the topic is complex and extensive, so it's hard to say right away.
I myself bred barbels from larvae, but in most cases everything ended in failure, although I managed to bring out a few good species.
The general picture is this-folding twigs or bark or dead bodies with larvae in vessels (cans, boxes, aquariums), rather tightly laying the substrate, since the larvae do not have legs and often die due to the fact that they can not get where they need, because everything is not tightly folded.
I strongly advise you to take a cut of a stump or tree if you find a rotten tree with a large number of larvae, which should then be put in a closed aquarium with earth or dust.. So the chances are much higher. In this way, I have already managed to breed about a hundred or more Criocephalus rusticus from larvae taken together with a piece of the stump or trunk of a small tree. This is 3 stumps in 3 years.

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