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Posted by conopid on 26-06-2006 21:42

Wow, this thing is beautiful. To save me time IDing it, can anyone suggest genus or species?

Posted by Kahis on 26-06-2006 22:09

Hypophyllus discipes. First time I've seen it, we don't have it here in Finland. Nice!

Posted by Nikita Vikhrev on 26-06-2006 22:10

Hi Nigel.
I think it is male Neurigona.
In my key (Diptera of European Russia) there is Neurigona longipes (Beck), male with 5-th segment of foretarsus with black plumage, but I can't fintd yet this species in modern checklists.
Nikita

Posted by Nikita Vikhrev on 26-06-2006 22:19

Just found Kahis's reply. As usualy, to be faster than Kahis is impossible (yet). Much more difficult to give as correct ID as Kahis:(
But I still hope someday...

Posted by Kahis on 26-06-2006 23:11

For the record, no (European) Medeterinae has such long 'Ministry of Silly Walks' legs, they are rather compact critters. In the field male Hypophyllus are recognisable as 'anorectic Hercostomus', ie. Hercostomus-sized but very slender.

Edited by Kahis on 26-06-2006 23:12

Posted by conopid on 26-06-2006 23:34

Hi Kahis and Nikita,
Just to let you know that Hypophyllus discipes is scarce in the UK, so I am well pleased with this find. Those flat, balck fore tarsi are unmistakeable I assume?

Anyway, it's alovely fly and I have lots more Dolis awaiting ID, so no doubt I will post a few more for advice.

Thanks to both. By the way, the UK checklist on the Dipterists Forum web pages calls this fly Sybistroma discipes. Do you know which is the current accepted name?

Posted by Xespok on 27-06-2006 08:53

A similar Dolichopodid fly was very common in Hungary a month ago for a week or so. Is this the same genus? What is the role of the enlarged black tarsi?

Posted by Paul Beuk on 27-06-2006 09:05

#10

Without a clear view of the fore tarsus I cannot be entirely sure, but following Grichanov's key (see HERE) I arrive at Neurigona abdominalis, a male.

Posted by Xespok on 27-06-2006 10:43

#11

Unfortunately the legs are very long in this species, so it is difficult to get everything in the same focal plane. I have another image where the tarsi are slightly better visible. The modified tarsi were very obvious in these flies.

Posted by Xespok on 27-06-2006 10:48

#12

Following yout link, I visited the Dolichopodidae phototheque, where an image of Neurigona quadrifasciata male looks very similar to my image.

I suspect this image must show the female of the same species than.