Black and yellowish rather than black and white. Is it possible to distinguish Sarcophaga species visually?
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You can't do them visually...you need to look at the male genitalia.
My Flickr photos...
Many thanks, Ophrys. This one seemed unusually large, and yellowish where one might have expected white.
Lat/Lng: 51.44, -0.02
OS grid ref: TQ377730