Thread subject: Diptera.info :: Fly for ID
Posted by Toby on 30-03-2008 19:41
#1
quite pleased with this picture, be nice to have species ID'd
Edited by Toby on 01-04-2008 01:18
Posted by Toby on 01-04-2008 01:18
#2
better shot for ID
Posted by crex on 01-04-2008 05:57
#3
Location and date?
Posted by Toby on 01-04-2008 08:18
#4
last sunday in Richmond Park, SW London.
Posted by Susan R Walter on 01-04-2008 13:32
#5
Well, it's Tachinidae, so I think we are all waiting for Chris or Theo :D
Posted by ChrisR on 01-04-2008 13:51
#6
I have been studiously avoiding this one because it's just not something I can recognise easily. Early species are few and far between but I seldom come across anything but the usual
Gymnocheta or
Tachina ursina here :(
The very hairly eyes, bare parafacial and slightly unusual arrangement of scutellar bristles should be fairly characteristic but if I was going to venture an ID I'd prefer to see the specimen because there's not enough visible to allow me to key it :)
Posted by Toby on 01-04-2008 18:41
#7
does a rear view help?
Posted by Zeegers on 01-04-2008 19:42
#8
It's Cyzenis albicans no doubt, a rather early spring species in deciduous forests, quite common.
You can see that there is one (pair of) proclinate orbital setae, which is very unusual in Tachinidae: the rule is none in males and two pairs in females. However, in Cyzenis both sexes have one pair.
That's why the genus was called Monochaeta for long time.
Theo
Posted by Toby on 02-04-2008 07:37
#9
setae are bristles - which are the orbital setae ?
Posted by Zeegers on 02-04-2008 18:19
#10
Look at 'glossary' under 'navigation', that's why I don't bother to explain it in every post.
Theo