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Diptera.info :: Identification queries :: Diptera (adults)
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Odinia boletina <- flies with strong legs on Polypore
Carnifex
#1 Print Post
Posted on 02-07-2018 18:10
Member

Location: Vienna, Austria
Posts: 252
Joined: 23.06.15

Hi,

these two flies I found on a polypore mushroom in the Botanical Garden of Vienna.
Very conspicuous was the reflecting white face in the area of the mouthparts and their stuttering walking behavior. Reminded me of a scuttle fly, in fast forward.

Cheers!
Lorin

static.inaturalist.org/photos/20675724/original.jpeg
static.inaturalist.org/photos/20675732/original.jpeg
static.inaturalist.org/photos/20675740/original.jpeg
static.inaturalist.org/photos/20676140/original.jpeg
Edited by Carnifex on 13-07-2018 16:30
 
Jan Maca
#2 Print Post
Posted on 02-07-2018 19:53
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Location:
Posts: 43
Joined: 25.03.10

Odinia sp.; difficult to go farther.
 
Carnifex
#3 Print Post
Posted on 04-07-2018 09:22
Member

Location: Vienna, Austria
Posts: 252
Joined: 23.06.15

Thanks Jan, apparently Odinia genus is a mess Smile
 
Sven Hellqvist
#4 Print Post
Posted on 04-07-2018 18:22
Member

Location: Umeå, Sweden
Posts: 26
Joined: 02.05.11

Yes, Odinia is a mess but nevertheless I think your specimens are O. boletina.
/Sven
 
Carnifex
#5 Print Post
Posted on 05-07-2018 09:32
Member

Location: Vienna, Austria
Posts: 252
Joined: 23.06.15

There was a discussion in this forum some years ago where, according to a translation of the original description, the transverse nerves in O. boletina are not infuscated, in contrast to O. ornata. Is this still valid or obsolete?
 
Ectemnius
#6 Print Post
Posted on 11-07-2018 10:37
Member

Location: The Netherlands
Posts: 560
Joined: 22.11.11

Hi Carnifex,

The weak spots on the crossveins and the habit of sitting on the underside of a polypore funghi (probably Fomes fomentarius) all indicate O. boletina.
If you want to be sure then you have to macerate the specimens. Then the markings on the eyes will become visible. The number of eye fascia are indicative of species.

Kind regards,

Ectemnius
 
Carnifex
#7 Print Post
Posted on 12-07-2018 13:15
Member

Location: Vienna, Austria
Posts: 252
Joined: 23.06.15

is this helpful?

Same specimens, first male, second female:

static.inaturalist.org/photos/21209815/large.jpeg

static.inaturalist.org/photos/21209807/large.jpg
 
Ectemnius
#8 Print Post
Posted on 13-07-2018 16:27
Member

Location: The Netherlands
Posts: 560
Joined: 22.11.11

Hi Carnifex,

Yes, one eye fascia -> Odinia boletina!

Kind regards,

Ectemnius
 
Carnifex
#9 Print Post
Posted on 13-07-2018 16:30
Member

Location: Vienna, Austria
Posts: 252
Joined: 23.06.15

Thank you very much! :-)
All requests are from the urban area of Vienna, if not otherwise stated.
 
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Date and time
16 July 2018 14:32
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