Thread subject: Diptera.info :: Lonchaeidae?
Posted by kurt on 16-09-2010 20:24
#1
This fly was 5-6 mm. Is it possible to give it a name?
Photo from Nattsjön, Ångermanland, Sweden 62.53N 17.45 E 19 june 2010
Thanks for your help in advance
Regards
Kurt Holmqvist
Posted by kurt on 16-09-2010 20:25
#2
Last shot
Posted by Nikita Vikhrev on 16-09-2010 21:19
#3
At least Lonchaeidae is correct
Posted by Iain MacGowan on 17-09-2010 10:49
#4
Hi Kurt
adult Lonchaeidae are notoriously diffficult to ID from photos as most of the key characters are difficult to see - what I can say is that it is a female
Lonchaea spp. - the rather obscurelly orange basal tarsomeres may suggest
L. obscuritarsis or
L. albitarsis but thats just a bit of a guess ......... Iain
Posted by Mark-uk on 17-09-2010 13:51
#5
Hi Ian
you say adult Lonchaeidae are notoriously difficult, are the immature stages easier then?
Mark
Posted by kurt on 17-09-2010 20:14
#6
Many thanks to Nikita and Iain.
Kurt Holmqvist
Posted by Iain MacGowan on 20-09-2010 10:38
#7
Hi Mark
adult Lonchaeidaee not too diffivcult to do if you have a microscope - the key characters relate to the number / colour of setae on the body and the shape of the genitalia - however these do not show up well on photographs! so only a very few spp can be identified on this site. Perhaps I was being a bit pedantic by saying adult! - the larvae of most British species can be identified from the shape of the head skeleton - its all laid out in MacGowan, I. and Rotheray, G. E. 2008. British Lonchaeidae. Diptera, Cyclorrhapha, Acalyptratae. Handbooks for the Identification of British Insects, Vol. 10 (15).