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Hi, found this fly today (27. Oct. 2018) in Austria, Niederösterreich, Ober-Danegg

It was trapped indoors when i found it. We have a lot of deer in the area which often strides through the garden.

I estimate the body length to be about 3-4 mm - full length about 8 mm.



According to Pareys book of insects - the wings fall of when it has attached itself to a host, like deer, boar, fox or badger.
They hatch in the Fall (now) and let them self fall from trees unto a potential host.

Thanks
Per