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Since a week the numbers of Pollenia are greatly increasing in a yellow pan trap in my garden. They consist mostly of Pollenia rudis and some P. angustigena and P. pedicellata, but I key out one female with orange antenna as Pollenia viatica. That species should only fly in summer according to literature. If I interpret the characters correctly it has 2 anterodorsal bristles on the middle tibia, small yellow hairs posteroventrally on the hind femur and the tip of the palpi reddish-orange. Am I correct in the identification of Pollenia viatica?

https://waarnemin...186534470/.

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Hi Paul,

how many pv on t1? i'm not convinced yet. The lunula and basicosta appear to be brown. The photos are not of the best quality so i will have to rely on missing data. We definitely need to know how many pv are on t1 and how many marginal scutellar bristles does it have?

Best wishes,
John

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Hi John,

Thank you for your reply. I looked yesterday again at the specimen and compared it with other Pollenia's. I had misinterpreted the colour of the hairs postventrally of the hind femur, they are black. I now think it is just a Pollenia rudis, the other characters seem to fall within the range of that species.

I will look again at the specimen somewhere next days to answer your questions about the number of pv on t1 and marginal scutellar bristles.

Best wishes,
Paul