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Hello,
are both of this flies Calliphora vicina or one of them or none?
Both pictures are taken between the Black Forest (north) and the
Upper Rhine / Murg Valley / Southwestern Germany, 165 meters,
The fly on the leaf in Mai 2006, the fly on the wall January 2007.
Regards Ulrich

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Top one - can't tell. Bottom one - yellowy basicosta and reddish cheeks - C. vicina - that is if I have studied all the recent threads on the subject correctly.

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sorry for the question: but I don?t see basicosta in this view?? I don't see any yellowish hue in last photo. :S basicosta is below of halteres?
reddish cheeks that?s ok. :)

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Jorge

I'll do my best to explain. The basicosta is literally 'at the base of the costa'. I suppose it is the equivalent of a human scapula (shoulder blade), providing extra articulation for the wing, so it is situated above and in front of the halteres. You can see it in both dorsal and lateral views. The image above isn't very clear, but in combination with the apparently red cheeks I reckoned it was C vicina. I think you can also see the anterior spiracle which is likewise pale, and is another point for C vicina.

I'd like to take this opportunity to thank all those who have participated in the recent 'masterclass' threads on Calliphora identification - I have found them extremely useful. I am grateful that so many experts are prepared to spend the time with us learners.

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Happy New Year Susan and Jorge Take a look at this link for basicosta
http://www.nku.ed...20Pale.htm

From Flies of Forensic Importance Kentucky Useful for structure but doesn't cover many species

Robert

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Thank You all very much!
Ulrich