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Question about the behavior of flies (Tachinidae)

Community and Forum → Insects biology and faunistics → Question about the behavior of flies (Tachinidae)

Transilvania, 03.10.2008 0:41

picture: tachinidae.jpg

I saw a couple of days ago such a deadly embrace. Filmed in the Moscow region.
The victim is a kind of thick-winged fly Ectophasia crassipennis.
The small "predator" is very similar to the one presented on the dipter.info Ceromya silacea, also from the family Tachinidae.
But in theory, the fly should just lay eggs on the victim and fly on. Why did she grab it? After all, flies can not be like vampires – they are not ktyri any.

By the way, with such a burden, it can even fly from blade of grass to blade of grass. Strongman!

Or, if you'll excuse the silly version, did she find the fly already half-dead and decide to take it with her?

I will be grateful for the answer, for any versions.

Comments

03.10.2008 7:54, алекс 2611

 

I saw a couple of days ago such a deadly embrace. Filmed in the Moscow region.
The victim is a kind of thick-winged fly Ectophasia crassipennis.
The small "predator" is very similar to the one presented on the dipter.info Ceromya silacea, also from the family Tachinidae.
But in theory, the fly should just lay eggs on the victim and fly on. Why did she grab it? After all, flies can not be like vampires – they are not ktyri any.

By the way, with such a burden, it can even fly from blade of grass to blade of grass. Strongman!

Or, if you'll excuse the silly version, did she find the fly already half-dead and decide to take it with her?

I will be grateful for the answer, for any versions.


And the second fly is definitely Tahina? Maybe still from another family?
Likes: 1

03.10.2008 17:58, Transilvania

And the second fly is definitely Tahina? Maybe still from another family?



The fact of the matter is that there is no exact certainty. On diptera.info it is this small yellow fly that is presented in the section Flies. In general, it is quite similar in hair, muzzle and general body structure. I usually see these flies on flowers.
But I saw this scene twice.
Moreover, it simply hugs its "victim" - it does not dig its proboscis into it and does not try to do anything with it. She has a mouthpiece that looks just like a shepherd's.
In general, I am puzzled.

03.10.2008 18:29, Fornax13

It doesn't look much like tahini. It's too much of a predator's face. I remember something-some deepters present loot as a "wedding gift"... Or I just wanted to drag it to a secluded place so that no one would drag it away.
And for some reason, this creature evoked associations with Scathophagidae. But this is the opinion of an absolute teapot in dipters shuffle.gif
Likes: 1

03.10.2008 18:35, алекс 2611

It doesn't look much like tahini. It's too much of a predator's face. I remember something-some deepters present loot as a "wedding gift"... Or I just wanted to drag it to a secluded place so that no one would drag it away.
And for some reason, this creature evoked associations with Scathophagidae. But this is the opinion of the absolute teapot in dipters shuffle.gif


I'm only interested in a few dipteran families, I don't understand most of them, but I have the same associations - something scatophagid.
And to carry the victim, they do not need a proboscis - they have spikes on their front shins, they pierce and hold the prey.
But that's just a guess.

This post was edited by alex 2611-03.10.2008 18: 37
Likes: 1

03.10.2008 18:48, amara

And I'm already a complete layman here, but I'm curious to ask, do Scatophagids not always have a pubescent abdomen? Like in these photos:
http://www.pbase.com/tmurray74/dung_flies_scathophagidae
http://www.funet.fi/pub/sci/bio/life/insec...haga/index.html

This post was edited by amara - 03.10.2008 18: 56
Likes: 1

03.10.2008 22:25, RippeR

Amara:
by the way from your link:
http://www.pbase.com/tmurray74/image/96450228
similar action smile.gif))
Likes: 1

07.10.2008 19:32, Transilvania

Oh, thank you all!
This fly was giving me no rest.

Apparently, exactly Scathophagidae. On the website of ZIN ras it is written that some of this sem. still predators.

I was confused that her belly wasn't fluffy. In this meadow, there are many scatophagids with fluffy red paws and bellies, as in the link amara. I read somewhere that males are the most furry among the scathophagi...
And the one that I took off is smoother and at the same time for some reason wildly similar to the red ceromia (tahina) from dipter.

What is characteristic - my fly really has spikes on its paws for piercing!

By the way, I saw photos of a couple of ktyrei somewhere - the male brought the female a fly and while she was eating a gift, mated with her.

It is a pity that there is not enough information on Scathophagidae. They say that they can eat pollen and predate. But how to catch prey is not entirely clear.
That victim, which is in the paws of my fly, no longer twitched;=) As if long ago died.

15.12.2016 21:49, Андреас

News on a forgotten topic: (I read Around the world)
" Some small parasitic wasps infect the larvae of flies with their eggs every day. Then the fly larvae enter the caterpillars, and already there the wasp larvae come out of them, and they eat the caterpillars alive. Such resourceful wasps are called superparasites."

"What happens to the taheen larvae at this time?" - Do they devour the caterpillar, simultaneously devoured by wasp larvae and die?, or do they successfully devour the caterpillar in parallel with wasp larvae and come out alive and unharmed?

15.12.2016 23:10, ИНО

Specifically, tachins usually have one larva per caterpillar, respectively, the rider larva (that's right, in Russian it's not wasps) eats the fly larva first, and then what remains of the caterpillar by that time (if it remains). In general, the variants of superparasitism are diverse, in the case of multiple infection with the larvae of the host parasitoid in combination with infection with the larvae of the superparasitoid only parts of them, as a result, a little of those and a little of these can break out. But the owner is screwed anyway.

This post was edited by ENO-12/15/2016 23: 12
Likes: 1

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