Thread subject: Diptera.info :: Empididae
Posted by kurt on 28-08-2010 20:05
#1
This male was round 9 mm. Is it possible to give it a name?
Photo from Nattsjön, Ĺngermanland, Sweden 62.53N 17.45 E 28 august 2010
Thanks for your help in advance
Regards
Kurt Holmqvist
Posted by Paul Beuk on 30-08-2010 12:15
#2
Rhamphomyia sp. Likely candidates are all well under 9 mm so are you certain about the size? Have any other pictures or perhaps even the specimen?
Posted by kurt on 30-08-2010 18:36
#3
Thanks for looking at my flies Theo.
It is sitting on Tanacetum vulgare. Size of flowerhead normally 9-12 mm so perhaps 7-8 mm instead.
This was only picture I manage to get.
Kurt Holmqvist
Posted by rvanderweele on 30-08-2010 21:12
#4
Paul, is this not an handsome R. spinipes? On the third femur, I think I see those typical collection of black bristles. Maybe I am silly. The size is okay, also the period.
I should say I never collected this species myself
Posted by Paul Beuk on 31-08-2010 09:54
#5
I think you may be right. I compared some of the features with Barták's description of
spinipes: mesonotum with two darker stripes on dc (there appears to be a darker stripe on ac here as well); f3 bare ventrally, with a cluster of long pv bristles in apical third (f3 does not seem to be bare here). I guess Barták's description should be interpreted differently as I now compared it with Collin's description (I did not realise it was a British species, too) and that one does indeed fit better. Still, AFAIK,
spinipes should not be this pale grey but perhaps that is the flash playing tricks.
Posted by kurt on 31-08-2010 19:42
#6
Thanks to Ruud and Paul once again.
Kurt Holmqvist