Diptera.info

Posted by Juergen Peters on 15-09-2021 19:34

Hello,

two years ago I had my first encounter with the genus Cylindromyia here (northwest Germany), two individuals in about 2 weeks. They were identified by Theo Zeegers as Cylindromyia brassicaria.

Yesterday I found the genus again on camomile flowers next to a path between acres. Length about 10 mm.
It was conspicuous, that one individual had a continuous stripe on its abdomen, the other not. Different species, a gender difference or simple variation?

Here also a little video of one of the flies cleaning its legs:
https://insektenf...utzend.mp4

Edited by Juergen Peters on 15-09-2021 22:11

Posted by Juergen Peters on 15-09-2021 19:35

Pic #2

Posted by Juergen Peters on 15-09-2021 19:35

Pic #3 (other individual)

Edited by Juergen Peters on 15-09-2021 19:36

Posted by Juergen Peters on 15-09-2021 19:36

Pic #4

Posted by Juergen Peters on 15-09-2021 19:37

Pic #5

Posted by eklans on 15-09-2021 19:51

Hallo Jürgen, the other one - with continuous stripe - has no discals: C. Pusilla?

Posted by Juergen Peters on 15-09-2021 19:57

eklans wrote:
the other one - with continuous stripe - has no discals: C. Pusilla?

Thanks, Eric.

Posted by Zeegers on 15-09-2021 21:06

Both have basal scutellar bristles so both are males in the brassicaria group. Much too vig for pusilla.

Theo

Posted by Juergen Peters on 15-09-2021 22:10

Thanks, Theo!

Zeegers wrote:
Much too big for pusilla.

the second one may have been a little bit smaller, but not strikingly.

Edited by Juergen Peters on 16-09-2021 17:41

Posted by Zeegers on 16-09-2021 07:28

#10

Still, the wing venation and the arista contradicts pusilla.

Theo