Posted by Dennis on 13-04-2018 09:38
#1
Hallo!
Bavaria, 8.April
Found these black fly in a sunny forest, near a creek.
I dont know the lenght, I guess it was 5mm-1cm. She flew like a
Syrphidae. I have no idea which family it is.
Regards,
Dennis
Edited by Dennis on 13-04-2018 10:44
Posted by Ectemnius on 13-04-2018 10:18
#4
Hello Dennis,
It's not a she, but a he. And he is a Syrphidae indeed. A male Cheilosia morio. Nice find. Within the genus this species has a quite different larval habitat. Normally Cheilosia species live within herbs. But the larvae of C. morio live in exuding sap from Picea trees.
For comparison here's some photo's from the Netherlands:
https://waarneming.nl/soort/photos/197804
And here's the paper reporting the species new for the Netherlands (with English summary): http://www.repository.naturalis.nl/document/555357
It seems to be expanding its range in Europe.
Greetings,
Ectemnius