Thread subject: Diptera.info :: Siphona sp, Tachinidae
Posted by Andre Jas on 02-10-2006 17:14
#1
Hi,
I'm still very much strugling to get to grips with all those families. It's much harder than I thought. So once again I have to turn to you for help. What is it and how can I tell?
Thanks,
Andr
Edited by Andre Jas on 28-10-2006 00:01
Posted by Andre Jas on 02-10-2006 17:14
#2
2
Posted by Andre Jas on 02-10-2006 17:15
#3
3
Posted by Andre Jas on 02-10-2006 17:16
#4
4
Posted by Robert Nash on 02-10-2006 17:41
#5
Maybe Tachinidae Siphona?
Robert
Posted by ChrisR on 02-10-2006 21:38
#6
Yeah - I'd go with
Siphona sp. (based on the long, hinged proboscis - and i think i can see a subscutellum in one photo, which means it is certainly a tachinid) and possibly
S. geniculata (based on the presence of median-marginals on T1+2 & the general grey-brown colour) but that a very rough identification :)
Posted by Andre Jas on 02-10-2006 23:16
#7
Thank you very much, Robert and Michael.
Dumb question maybe, but waht are median-marginals?
Andr
Posted by ChrisR on 03-10-2006 01:08
#8
Michael? :p
Median - means along the middle or mid-line of the body
Marginals - the bristles on the margin, or edge of a tergite (the chitinous segment on the dorsal (top) side of the abdomen)
So, in your third photo you can see there are 2 bristles in the middle of the margin of the first abdomenal segment (T1+2). :D
Posted by Andre Jas on 03-10-2006 11:19
#9
Hi Chris (aka Michael, sorry for the cockup):D,
Now I get it! And I looked at the original image, and yes there is a subscutellum visible. Thanks a lot.
Andr
Edited by Andre Jas on 03-10-2006 11:26
Posted by Robert Nash on 03-10-2006 12:58
#10
Andr? The terms median and marginal aren't in the Glossary yet (Submit Chris?);) but many other useful terms are: eg. tergite, T1, T2 etc. Calyptrate id relies on chaetotaxy- >Glossary>Chaetotaxy>and then follow the link to the CSIRO site . Study the Calyptrate and then try the Wikipedia pages for family descriptions. These are the most difficult fly families and were left out of many early monographs (those prior to the invention of the "chaetotaxy formula" for terminology). Anthomyiidae (which used to be Anthomyyinae of Muscidae) and Muscidae in the modern sense can be hard to separate without specimens.Tachinids, busy, often biger flies with plenty of bristles or distinctive shapes have more "jizz" (also a glossary word)
Best of luck Robert
Posted by Andre Jas on 28-10-2006 00:02
#11
Thank you Robert,
Better late than never:)
Andr
Posted by Zeegers on 28-10-2006 09:40
#12
Could also be Siphona cristata.
For the new readers: IDing Siphona from pictures in impossible.
So my guess is as good as yours
Theo Zeegers
Posted by Kahis on 28-10-2006 13:30
#13
I'm tempted to correct Theo: IDing Siphona [deleted] is impossible. ;)
Edited by Kahis on 28-10-2006 20:47
Posted by Zeegers on 28-10-2006 15:22
#14
'is impossible' is what I meant of course.
I disagree in most cases with Kahis, but i can understand all emotions from frustation to anger in the case of Siphona.
Kiitos
Theo