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female - 4.2 mm (excluding oviscape) - Berlin - July 2018
male - 4 mm - Berlin - July 2018

I am posting a photo of male and female. I believe that the correct id is Chaetostomella cylindrica.

I have Chaetorellia jaceae which has a presutural dc. The species in question lacks presutural dc.
A problem for me is that i don't see black basal spots on the scutellum of either gender.
Tergites 2-4 each have four black spots.
I see numerous black genal setae on the female. The male has white setae in addition to black setae.
postoculars are black which will eliminate C. rossica if this is Chaetostomella cylindrica.
just for the record, the oviscape is 1mm in length and the base is 0.5 mm in width.

Thank you for your time,
John