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Hello!

Forrest, on rotten Woods, 08.11.2015, Southwest-Germany, Size 9mm.
Is it Mycophaga testacea (Anthomyiidae).

Arista is plumose.

Regards
Andreas

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Pic 2

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Pic 3

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Pic 4

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Pic 5

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This is not what I call "a plumose arista". It is shortly pubescent.
I guess this is a Pegomya species.

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Indeed female Pegomya species (to many possibilities on species level)

Johanna

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Hello Johanna, Salut Stephane!

Thank you very much for the correction. Now I understand the difference between plumose und pubescens :-)

I have two new detailphotos. Hind leg und squama. Does it help?

Also I have collected some characteristics of Pegomya winthemi. I hope, they are correct:
3 ad setae on hind tibia ?
presutural acrostichals widely separated ?
Calli orange + scutellum with orange tip + abdomen orange + palpi orange
anterior frons yellow
legs yellow
projection lower sqauma
If mid and hind tarsi dilated is not visible on my photos
Is 9mm too tall for Pegomya winthemi?

Regards
Andreas

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Squama

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Mesonotum

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Without the specimen in hand or strong typical characters visible on photos (such as dilated tarsi), it is almost impossible to ID Pegomya female from photos. Better to collect male specimen, so we can look at the genitals.
The only thing I can say, ...it is probable one of the Fungi mining Pegomya.

Johanna

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Thank you very much Johanna!

One bad photo shows that mid and hind tarsi are not dilated. Anyway: I understand: female Pegomya can not be determined by photo.