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Diptera.info :: Identification queries :: Diptera (adults)
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Ariasella lusitanica, Hybotidae
Rui Andrade
#61 Print Post
Posted on 16-03-2008 19:41
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So many nice images that Jorge has, I'm a little enviousPfft.

crex said:
Did you see any more hunting activities or were they just humping around?


Today I saw one male catching a little dipteran, as it happenedCool. I will tell you how it happened:
I was watching the male hybotid, who was on an eucalyptus leaf and, as little creatures strolled by he reacted to them, following them with his eyes. When a small dipteran passed in front of him he focused on it and attached when the prey turned its back on himShock. It was amazing to see.

Jorge Almeida said:
smiley precisely. he didn't care anything about the "MANY" bounces he had. smiley this is what I call "hard sex". smiley


I also saw the "soft sex"Grin. Even though the female carried the male, it wasn't really soft (you will find out what I mean when I send a video to JorgeWink).

img142.imageshack.us/img142/2967/hy1uy6.jpg

img142.imageshack.us/img142/4271/hy2wv0.jpg

img142.imageshack.us/img142/7360/hy3rc6.jpg
 
www.flickr.com/photos/rui_andrade/
jorgemotalmeida
#62 Print Post
Posted on 16-03-2008 19:45
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what? this fly knows all kamasutra positions! ShockCool
I'm waiting eagerly for those new videos. Smile
 
http://www.flickr.com/photos/superegnum
Rui Andrade
#63 Print Post
Posted on 16-03-2008 19:45
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Photos from the habitat:

img444.imageshack.us/img444/3184/habit1fa5.jpg

img444.imageshack.us/img444/1613/habit2pk3.jpg

img444.imageshack.us/img444/3569/habit3cj9.jpg
 
www.flickr.com/photos/rui_andrade/
jorgemotalmeida
#64 Print Post
Posted on 16-03-2008 19:47
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Ulex spp. in full blossom. GrinPfft
The second photo shows precisely the site/local where we spotted the flies yesterday. Pfft

ah, almost I forgot... Thanks Tony and Pierre. Smile
 
http://www.flickr.com/photos/superegnum
jorgemotalmeida
#65 Print Post
Posted on 16-03-2008 21:29
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more one video: http://www.youtub...VfeJQ3MP_8
Grin
 
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jorgemotalmeida
#66 Print Post
Posted on 16-03-2008 23:36
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new video on predation: http://www.youtub...W4BqHk7bY4
 
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crex
#67 Print Post
Posted on 17-03-2008 07:29
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Rui Andrade wrote:
Photos from the habitat:


... but the fly images you've shown are almost all on sandy ground!? Not much vegetation seen there.
Edited by crex on 17-03-2008 07:30
 
Rui Andrade
#68 Print Post
Posted on 17-03-2008 14:57
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crex wrote:
... but the fly images you've shown are almost all on sandy ground!? Not much vegetation seen there.


They pretty much walk around everywhere, but it's much less difficult to photograph them in the open area (blue circle) than in the middle of the vegetation (red circle).

img148.imageshack.us/img148/438/habit2pk3id5.jpg
 
www.flickr.com/photos/rui_andrade/
Susan R Walter
#69 Print Post
Posted on 17-03-2008 15:00
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I notice that in the video where the male is mounted, he is also quite rigid - he doesn't appear to be using his front and rear legs to cling on, they are just stiffly outstretched.

In the predation video, the frantic action of the back legs reminds me of the madly wagging tails of lambs when they feed.

Fascinating stuff - well done you two.
Susan
 
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Rui Andrade
#70 Print Post
Posted on 17-03-2008 16:22
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Susan R Walter wrote:
I notice that in the video where the male is mounted, he is also quite rigid - he doesn't appear to be using his front and rear legs to cling on, they are just stiffly outstretched.

In the predation video, the frantic action of the back legs reminds me of the madly wagging tails of lambs when they feed.

Fascinating stuff - well done you two.


Thank you SusanSmile. Yes, the male never moved during the whole mating. But I wonder why the female caused all that agitationFrown. Maybe to increase the chances of fertilization?
 
www.flickr.com/photos/rui_andrade/
Rui Andrade
#71 Print Post
Posted on 11-04-2008 19:53
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On the last Wednesday (09/04/2008) I found several Tachydromia. Today this dead female has that strange white structure on the tip of the abdomen. What is it? Eggs? A parasite?

img145.imageshack.us/img145/6133/hybotidcv0.jpg
 
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Paul Beuk
#72 Print Post
Posted on 11-04-2008 20:13
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Those are eggs.
Paul

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Paul Beuk on https://diptera.info
 
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jorgemotalmeida
#73 Print Post
Posted on 11-04-2008 20:17
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eggs, of course. Smile As I told you in the email. Pfft
 
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Rui Andrade
#74 Print Post
Posted on 11-04-2008 20:25
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ThanksSmile

What do I do with the eggs? Put them in alcohol?
 
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Paul Beuk
#75 Print Post
Posted on 12-04-2008 08:27
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If they are not dried out yet, please, do so.
Paul

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Rui Andrade
#76 Print Post
Posted on 13-04-2008 00:44
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Ok, thank you Paul.
 
www.flickr.com/photos/rui_andrade/
Rui Andrade
#77 Print Post
Posted on 05-05-2008 20:57
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Today I finally saw the beginning of a mating of TachydromiaSmile.
I've decided to fallow a male to see if I found anything new. After a few minutes, I saw him catching a small dipteran, and some more later a female approached and mating began at an amazing speed. I wasn't even able to tell who made the first moveShock. When I finally made sense of what was going on, the female was feeding off the male's prey (did the male give it voluntarily, or did the female stole it?).
Unfortunately I couldn't manage to film the scene, it was too quickSad.


img137.imageshack.us/img137/5864/t2re7.jpg
1- male feeding before the mating

img137.imageshack.us/img137/9261/t3mm4.jpg
2- mating (female with prey)

Another intresting thing happened before the mating. While the male was feeding, a spider tried to attack him. As a response, the male repeatedly lifted his abdomen trying to intimidate his opponent, and succeededSmile. I only got to take one sloppy photo of this behaviour.

img137.imageshack.us/img137/6379/t1bn4.jpg
3- defensive behaviour

img137.imageshack.us/img137/9669/t4pp6.jpg
4- during the hottest part of the day, a female takes cover from the heat thanks to the vegetation


.
 
www.flickr.com/photos/rui_andrade/
jorgemotalmeida
#78 Print Post
Posted on 05-05-2008 21:24
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"attenborough andrade" Grin
 
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Rui Andrade
#79 Print Post
Posted on 06-05-2008 21:48
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Today I started to look for Tachydromia at around 8 AM, until 6 PM. I only found 3 specimens. The adults are disappearing.
I found 2 females and 1 male, all of them in the afternoon. After several hours searching for specimens without success, I finally found the last two almost simultaneously at around 5.40 PM. Why is it? Chance?
 
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jorgemotalmeida
#80 Print Post
Posted on 06-05-2008 22:11
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they are not tolerable to the heat, maybe.
 
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07.03.24 00:01
Some flies preserved in ethanol and then pinned often get the eyes sunken, how can this be avoided? Best answer: I usually keep alcohol-collected material in alcohol

17.08.23 15:23
Aneomochtherus

17.08.23 13:54
Tony, I HAD a blank in the file name. Sorry!

17.08.23 13:44
Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

17.08.23 11:37
pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

16.08.23 08:37
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!

23.02.23 21:29
Has anyone used the Leica DM500, any comments.

27.12.22 21:10
Thanks, Jan Willem! Much appreciated. Grin

19.12.22 11:33
Thanks Paul for your work on keeping this forum available! Just made a donation via PayPal.

09.10.22 17:07
Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

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