CLOSED: Is this a pregnant fly?

I would like to know in what family I have to do a search..
I found it sunning on a stone bridge on the countryside on the 26th of September.

I only have one picture;

Drosophila obscura ? I don't know..

It resembles, to a degree, Psilopa nitidula in Family: Ephydridae. But I could be totally wrong, lol, the humped back is typical of Drosophilidae and yours does look more humped. One for the experts I think!

http://diptera.info/photogallery.php?album_id=18&rowstart=30

Thank you Enmos, I certainly looks like being in that family.
I only found one picture on the web of Drosophila obscura, but the picture isn't very clear and it doesn't look like it has orange wings like mine..
http://popgen.unimaas.nl/~jlindsey/commanster/Insects/Flies/WFlies/Drosophila.obscura.jpg

Oh thanks Wallaby, had missed your post! and I just came back from the Diptera site where I've posted mine..

I already got an answer from Andrezj, it appears to be in the Lauxaniidae family, no genus though...

Me too, I had one I thought looked like Ephydridae but was also in Lauxaniidae!! They can look so similar! I got a genus though! :)

Not fair, lol! :-)

Still haven't got a species though, could be one of two! :) Here's hoping someone can give me that..

Got my genus too now! it's a Calliopum sp. I'll try to do more research with this.

I found one much like mine, but two are similar, Calliopum simillimum and C. aeneum. Apparently the head, legs and genitals make the difference but the pic I saw wasn't a certain ID and not good either!

I would be tempted to go with C. simillimum as that's the only one on this micro site, but mine is much different to yours!

http://micropics.org.uk/Lauxaniidae/Calliopum/simillimum/calliopum%20simillimum.htm

The leg colour on this pic is brown where mine is black though! Note the size at 3.5-4.5mm! I thought it was small....lol!

http://popgen.unimaas.nl/~jlindsey/commanster/Insects/Flies/SpFlies/Calliopum.simillimum.html

Yours isn't on here either,

http://popgen.unimaas.nl/~jlindsey/commanster/Insects/Flies/Lauxaniidae.html

Nor can I tell from this pic!

http://www.gwydir.demon.co.uk/insects/acalyptratae.htm

Aha! C. simillimum has banded eyes! So has mine, which I hadn't seen.

http://www.mzephotos.com/gallery/insects/fly-with-banded-eyes.html

I have found the answer to mine, lol! It has to be C simillimum as the other has yellowish legs and is greenish black, so the others must be wrong!

http://209.85.135.104/search?q=cache:noS5rrqv8bkJ:www.wrg.co.uk/moorenaturereserve/data/downloads/moore%2520flies.doc+Calliopum&hl=en&ct=clnk&cd=10&gl=uk&ie=UTF-8

I wonder if yours is Calliopum aeneum

"A widespread and common, shining green-black fly with yellow legs and yellow-tinted wings which is frequently swept from grasses throughout the summer and autumn months. The larvae feed on decaying plant material and are also recorded as mining"

Second thoughts I doubt yours is C. aeneum, wrong colour legs and too green maybe?

In case you haven't seen mine on dipter.info, this is it and quite different to yours! I'm satisfied with mine so will ask Ken to add the Family, and see if you can find which species yours is so Ken can choose for illustration.

Mine looks like this pic too! The last link I gave above mentions they mine on clover leaves, which I had plenty of nearby!

http://diptera.info/photogallery.php?photo_id=831

Thank you !! I couldn't come back to it last night, and I don't want to do this in a hurry as I have to leave for the day.I have had a quick look at all the links but will have more time , this evening.
I really would think that mine looks very much like C.simillimum, the stripes in its eyes look the same.
I think you better put your picture for this family...

If I were to go for one of those for yours, it would be Calliopum aeneum

"A widespread and common, shining green-black fly with yellow legs and yellow-tinted wings which is frequently swept from grasses throughout the summer and autumn months. The larvae feed on decaying plant material and are also recorded as mining"


The description for C. simillimum

"A common and widely distributed fly which occurs in grasses and low vegetation. The larva is recorded as mining clover leaves and the adult flies from early summer until quite late in the year."

As the legs on yours are brownish in colour, and the wings look more yellow-tinted, also it is a greenish colour Calliopum aeneum would be the logical choice. They might both have striped eyes!

Bioimages calls it an 'agg.' which usually means a group of similar, but not individually identified species. That may explain the slight differences to the description. The larvae causes galls.

http://www.bioimages.org.uk/html/T43057.HTM

There's a pic of "Calliopum cf. aeneum" on this site which looks more like yours, the cf. is used where the ID is not certain but likely, I think!

http://insektenfotos.de/insects_diptera.htm

I think Calliopum simillimum should be indeed ruled out for mine!
I remember the area I found it there was no clover growing.

So yes probably mine could well be Calliopum aeneum by its description. Like you say its mentioned in the bioimages site with an agg. addition to its name so is usually a group of species, by that I understand that there are variations. The pic. of the German site does look like mine better only that the colour of the wings of mine is more deep and its abdomen looks more dark, but that might be because of the light fall differences, gold can look darker from a certain angle.

I found some more pics. on the same site in a forum of the German site;
http://insektenfotos.de/forum/thread.php?threadid=20564&hilight=calliopum

I think it might be safe to go for C.aeneum.agg. for mine, I suppose that when I enter it in Bug Files I should also add the 'agg.' addition to its name?

Thanks a lot wallaby!! :-)

I think C.aeneum.agg., it is a common one here so is likely to be common for you too, and to be honest I haven't come across anything else!

Thanks! I'll mark it as solved and leave it open whether it's pregnant or not, lol!