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The Society for the study of flies (Diptera)

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#1 2017-05-05 22:58:58

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 169

Any suggestions for this orange fly?

South Devon coastal reedbed site.

Some real life shots so not perfect angles. I was thinking about Sciomyzidae but several things look wrong; so I have been wandering through various other ideas without getting anywhere.

A few distinctive markings so hopefully some one will recognise it, at least to the family.


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#2 2017-05-05 23:10:02

jeremyr
DF Members
Name: Jeremy Richardson
From: Tottenham
Registered: 2012-12-31
Posts: 222

Re: Any suggestions for this orange fly?

It's a Psila species (Psilidae), probably merdaria as the base of the arista does not look very dark

Jeremy

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#3 2017-05-05 23:18:35

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 169

Re: Any suggestions for this orange fly?

Thanks, and so quickly as well.

That is one group which I didn't think about; and I do have the keys so it is a black mark against me there!

Now I will have to try the family keys again and see if I can reach Psilidae, or see where I was going wrong with them.

Experience is a wonderful thing isn't it!

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#4 2017-05-06 21:49:56

Rainieria
Committee
Name: Darwyn Sumner
Registered: 2008-02-20
Posts: 308

Re: Any suggestions for this orange fly?

The big clue to Psila spp. is the more or less visible outline of "wonky spectacles" on the thorax (one lens bigger than the other)


Darwyn Sumner
DF Bulletin Editor, Scheme Organiser: Stilt & Stalk Flies

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#5 2017-05-07 22:09:38

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 169

Re: Any suggestions for this orange fly?

Yes, thanks for the hint, I  knew I had seen this sort of 'design' somewhere before but couldn't remember where and didn't manage to use the family keys correctly to get to Psilidae. If I had reached that point I have your 2004  Diopsoidea keys which should have then given me a result.

I use the old Unwin family keys and Stuart Ball's newer keys but with quite a few groups I still fail to make a connection.

With some groups, I have put together prints of my photos plus some basic notes so I can flick through images of species which I have previously seen and that often gives me a reminder clue about the best direction to take for an identification. I am doing it for moths and craneflies but I really need to put together some other groupings.

Not listed logically by families but using visual clues, such as 'orange flies' irrespective of grouping families in the correct order.

I can remember seeing Psila previously, but several years ago and my images must be somewhere on an old disc.

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