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Why do wasps dismember flies?

Community and Forum → Insects biology and faunistics → Why do wasps dismember flies?

Yguar, 01.10.2009 19:47

Once I saw a wasp catch a fly in the air-very similar to a wasp. They both fell on the table, and the wasp bit off its head, legs, and belly from its chest and flew away without taking anything. What was that?

And yet, I often see huge hornets he is like the usual European, on the "muzzle" between the eyes he has a wide dark brown mask these hornets are larger than those without masks. Can you tell me what these hornets are?

I saw a huge rider 4 cm he flew and not alone, after a forest fire. The trees weren't quite cold yet, and they were bursting holes in the trees. What kind of riders are these and why should they fly up hot trees (at least warm, charred and wet ones)?


Please do not bante I have been looking for a forum on entomology for a very long time and I have a lot of questions but I have not found yet where to place them with you.

Comments

01.10.2009 19:55, Dmitrii Musolin

You should not be banned! You may only be asked to move the topic to another branch.

The wasp most likely had to take the fly's body with it to a burrow or nest and lay its eggs in it so that the hatched larvae could feed on it. Some species do not tear off the honor of the body, but simply paralyze the victim-such a live conservation is obtained.

Riders, like forest pests, may well come to the smell of burning, because they know that a weakened stand will be populated with pests - their food.

01.10.2009 20:06, Fornax13

I don't think they're horsemen, but horntails. Then their interest is quite clear smile.gif

01.10.2009 20:09, Dmitrii Musolin

maybe so... then here are the pictures:

riders:
http://images.google.ru/images?hl=ru&clien...q=f&oq=&start=0

horntails:
http://images.google.ru/images?hl=ru&clien...q=f&oq=&start=0

01.10.2009 20:24, Tigran Oganesov

The wasp is from public places for sure. They take the abdomen or breast (often first one, and then, when they return, the other). Then they are taken to the nest, where they are ground into mush with their jaws and feed their larvae with this gruel. The wasps themselves do not eat meat, they feed on nectar.

Yekaterinburg, right? Then you have only one hornet-Vespa crabro

And in order not to be banned the rules must be followed smile.gif

02.10.2009 15:25, Насекомовед

There was a note on this topic: http://entomology.ru/main_menu/news/20060724.htm

09.08.2010 8:36, guest: илья

"I saw a huge rider 4 cm ..."
Yguar, not in the subject, but this is not a rider, but a pale-legged sawfly. I recently caught it myself and was surprised that such" riders " are huge eek.gif... Accidentally in the book I came across a picture of a pale-legged sawfly-exactly like I caught lol.gif lol.gif lol.gif

09.08.2010 11:07, Pirx

There are special wasps (from sphecoid, I think) known as classic sirfid hunters ("wasp-like flies") and other flies. Here is a good photo from the Macro Club (unfortunately, I didn't save information about the origin of the image). Not her?

This post was edited by Pirx-09.08.2010 11: 40

Pictures:
1.JPG
1.JPG — (190.99к)

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