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Diptera.info » Miscellaneous » General queries
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strange phenomenon
jorgemotalmeida
Hi


I cuaght a fly yesterday that apparently had not any signals of acari (perhaps hidden below calypters)... but today when I opened the fly was dead and with dozens and dozens of acari! It seems to be Varroa sp. ??? This seems to be no plausible. Varroa sp. attacks bees, not the flies. I might be wrong about id acari... but it seems really perfectly like a Varroa sp. Anyone reported any time parasitism (parasitoid acari) among acari against flies?
 
http://www.flickr.com/photos/superegnum
Tony Irwin
Any pictures, Jorge?
Tony
----------
Tony Irwin
 
jorgemotalmeida
tomorrow I will show some photos.
 
http://www.flickr.com/photos/superegnum
jorgemotalmeida
sorry for the delay, Tony.

Here comes the photos. Smile

the fly seems to be Lonchaeid...
 
http://www.flickr.com/photos/superegnum
jorgemotalmeida
and the mites...
Edited by jorgemotalmeida on 27-05-2007 16:43
 
http://www.flickr.com/photos/superegnum
Nikita Vikhrev
1. Seems your fly is a female of Fannia. Am I right?
2. If you havn't wings and if you like live in dung, how can you travel from old and dry dung to new and testy one? You have to use PterygotaAirlines to travel!
Nikita Vikhrev - Zool Museum of Moscow University
 
jorgemotalmeida
loool Smile eheh

hmm... it is quite possible to be Fannia sp.! Is it common to be very dark like coal? AND this is really much more bristly than a normal lonchaeid. Smile

the problem is other... the mite seems had attacked and killed the fly. awkward When I caught this fly I didn?t see any mites... (it doesn?t seem an acari..) and this fly was totally closed inside a vial. Then a few hours passed, I opened again the vial... and there were dozens of them! Frown

They seem to have hatched from abdomen.
 
http://www.flickr.com/photos/superegnum
Tony Irwin
Hi Jorge. Thanks for posting the pictures. The mites are almost certainly Macrochelidae. They are very common micropredators on dung and compost heaps, and regularly hitch a ride on staphylinids, muscids and other larger insects that visit. Here is a photo of a Stomoxys with a load under its abdomen - I suspect your fly was carrying them like this.
http://www.icb.us...musc14.jpg
Tony
----------
Tony Irwin
 
jorgemotalmeida
that's it!! but the difference is that mites killed the fly. They ate the abdomen of the fly. awkward
 
http://www.flickr.com/photos/superegnum
jorgemotalmeida
i must mention that these mites has about 1 mm or less. Wink
 
http://www.flickr.com/photos/superegnum
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