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Dear David,
Thank you very much for your fast response.
I guess it's the common fly and I think you're right.
But: what do I have to do to avoid this behaviour?
All the windows are closed, also the doors.
Maybe some kind of trap?
It will happen every year from Autumn to Winter?
It means that they will wake up shortly and start to fly arround the
tower?
Thank you again,
---
Berta Blasi
Conservació - Restauració
Document Gràfic
www.bertablasi.com
[email protected]
(0034) 626 266 293
El 31/03/2011, a las 17:47, David Pinniger escribió:
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It needs a close up of a fly to be certain, but they are probably
cluster
flies which come indoors every Autumn to hibernate over winter.
The main species in the UK is Pollenia rudis which breeds in
earthworms in
grassland. The adults love sunny towers.
They are harmless but can be a great nuisance, and the bodies will
provide
food for pests such as Anthrenus and Attagenus.
David Pinniger
-----Original Message-----
From: [email protected] [mailto:[email protected]
]
On Behalf Of Berta Blasi
Sent: 31 March 2011 15:06
To: [email protected]
Subject: [pestlist] A fly plague?!
Dear colleages,
I have a plague of indestructible flies in the archive.
The archive is placed in the high of a tower, in a room of 20m2 and
long ago
it was a jail.
There are million stunned flies (they do not fly, they only move
when you
touch them).
The room is approximately at 10ºC and 50-55% of humidity. There is no
directly beam of sun because the windows are closed if there is
nobody (it
means most of the time). It is cleaned in depth from time to time
but the
flies always re-arise.
The flies stay between the glass of the windows and the shutter as
you can
see in the photo and also on the floor. I have never seen so many
flies
together!
Which can be the reason? What are they eating? In the archive we
didn't
detect any dead animal but that keep on reproducing continuously.
What do we have to do?
Thank you very much for your help.
---
Berta Blasi
Conservació - Restauració
Document Gràfic
www.bertablasi.com
[email protected]
(0034) 626 266 293
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