Thread subject: Diptera.info :: Sicus sp.
Posted by lweit on 11-07-2006 21:26
#1
I've seen this fly on flower in a wood, i think it's Sicus ferrugineus
I've seen this fly in a precedent message
Is'nt it
Louis
Posted by lweit on 11-07-2006 21:27
#2
Another phot of this fly
Photo taken in NE of France, near Metz.
Posted by Perseus on 12-07-2006 11:44
#4
From Shoreham, Sussex on 11 July 2006, edge of town.
Adur Valley (West Sussex VC13) Nature Notes
http://www.glaucus.org.uk/Adur2006.html
Adur Valley Nature Notes: July 2006
http://www.glaucus.org.uk/July2006.html
Adur Valley & Downs Gallery
http://www.flickr.com/groups/adur/pool/
View and upload your Sussex Wildlife Images to:
http://www.flickr.com/groups/sussexwildlife/
Posted by lweit on 12-07-2006 12:41
#5
What the difference between a male and a female
On my photos is a male or a female ??
Thank you
Louis
Posted by Tony Irwin on 12-07-2006 23:55
#6
Louis - female conopids have a complex abdominal structure where the fifth segment is produced ventrally to form a theca (though this is quite small in Sicus ferrugineus), and the seventh and eighth segments are enlarged as well. These structures form a clasping organ used when ovipositing on bees and wasps. By comparison the male genitalia are insignificant! In the Gallery, Gerard has posted a number of good photos of specimens which show the differences well. Your photos show a female.
Perseus - your Shoreham fly has a much shorter second tergite. This could be a male S. ferrugineus, or a male or female S. abdominalis (that would be a great find!). Another possibility is that it could be a Myopa species which can look rather like a stumpy Sicus. On balance I'd plump for a male S. ferrugineus.