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This is definitely a fly in family Dolichopodidae, and I think ophrys probably has the correct genus with Rhaphium, but I don't know the family well enough to be certain that there aren't any look-alike species in other genera, so haven't clicked on "I agree" (even though I do agree as far as my knowledge allows!).
Entomologist and biological recorder
distinctive arista and ribbon-like cercus - I've keyed a few of these in the past couple of days, using the key and then matching the genitalia separately. It seems one of the easier ones, but then the key is great. I was going to post the results tomorrow
They're very common on nettles right now
latest pics and diptera videos
Do you want to add that as a further identification Jeremy?
Which key are you using for dolichopodids, Jeremy, out of interest?
(PS: Is it the arista which is distinctive, or the 3rd antennal segment? I have yet to find any Rhaphium, since I got into dolis. I believe one or two Syntormon can have the large antennae, too, though not quite to this extent, perhaps).
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figures from Fonesca, and workshop notes? Yes, it's that the arista is much shorter than the 3rd segment. At the moment lots of this one, Argyra, and a Dolichopus I'm still trying to match - plenty of spares
Yes...just wondered whether you'd found anything extra. No dolis much here, yet, but then I'm busy at work most of the time...so could be missing them all!
the notes are superb on Rhaphium males in particular, less so - for me - on Dolichopus
...males generally come out okay with Fonseca. The trouble I find with Dolis is that their antennae easily get knocked off in a sweep net, so having a 'good' specimen is important (and then they dry up and the eyes implode...etc!). Take some getting used to, certainly.
an emphatically male-only project, I should have made clear. I'm going nowhere near females unless via a mating pair!
Lat/Lng: 50.9, -3.7
OS grid ref: SS8712