Thread subject: Diptera.info :: Ephydridae; Parydra coarctata (F) det. Tony Irwin

Posted by Roger Thomason on 09-04-2010 22:56
#1

I am sure I've seen this one on here before but I can't find it...It was found this evening at Scatsta Airport sitting on bags of Salt/Grit. Size was 3-4mm.


EDIT; Added Family and Genus to heading.

Edited by Roger Thomason on 12-04-2010 00:16

Posted by Roger Thomason on 09-04-2010 22:57
#2

2

Posted by Roger Thomason on 09-04-2010 22:57
#3

3

Posted by Roger Thomason on 09-04-2010 22:58
#4

4

Posted by Roger Thomason on 09-04-2010 22:59
#5

5

Posted by Andrzej on 09-04-2010 23:01
#6

Ephydridae ! ;)

Posted by Tony Irwin on 09-04-2010 23:52
#7

Parydra

Posted by Roger Thomason on 10-04-2010 00:30
#8

Thanks Andrzej and Tony
I thought it looked a bit like an Ephydrid with a froglike face...
I have one entry for Parydra in my List for Shetland;
Parydra pusilla Mg./nigritarsus Strobl
Whatever it is, it's the first time I've seen it up here ;), nice to find a new fly.

Regards Roger


EDIT; Another photo just to use it up

Edited by Roger Thomason on 10-04-2010 00:43

Posted by Tony Irwin on 11-04-2010 10:16
#9

Hi Roger - it's not pusilla or nigritarsis. There doesn't appear to be a large bristle on the outer surface of the mid coxa, and there looks to be a small appendix on R2+3, so I suspect this is corarctata (female).

Posted by Roger Thomason on 11-04-2010 21:06
#10

Cheers Tony
It would be great to get this little fly to species. Here is a dorsal view which I have done a repair job to in Photoshop....exposure was all over the place, but it has come out OK :).
Hope this helps in confirming your suspicions.

Posted by Tony Irwin on 11-04-2010 21:29
#11

Yes, looks like coarctata OK - if you can just check the mid-coxa - coarctata lacks the strong bristle which is present in the other species.

Posted by Roger Thomason on 11-04-2010 22:07
#12

Thanks Tony
I have just zoomed in on all 48 Photo's I took of this fly....:|, what a crap way to spend a Sunday Night..:D...Anyway, I can't find a bristle, other than these few hairs hanging down on the mid-coxa. Don't know if this is what you are looking for.

Posted by Tony Irwin on 11-04-2010 23:52
#13

No, they're not big enough. I'd put it down as coarctata.

Posted by Roger Thomason on 12-04-2010 00:14
#14

Thanks for all the time spent on this one Tony....appreciated :)

Regards Roger