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Dear Torsten: Severyn and I tried to see the hind notopleural setae, and we are not sure if they are black (as in conura). Otherwise, the ruralis has usually somewhat more numerous dots in the dark field (in additional to dark setae on abdomen). Thus, the reliability seems to be around 70%. Upper Rhine is the area where T. matricariae exists, so it cannot be excluded. I only rely on Severyn's experience with Tephritis, which is much bigger than mine.