Stephane, I am glad you like it. These flies are inexpensive and you don't need a hunting licence, .
Rui, I can compare only responses of some other Coenosia species during taking photos. Bigger species such as C. tigrina and C. humilis are easily disturbed. Smaller ones such as C. agromyzina, C. atra and C. cf. rufipalpis sometimes tolerate even holding a leaf they are sitting on. But I didn't test their tolerance to manipulation so far.
Anyone has "Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult Males Entomologica Scandinavica Supplement 34"?
smolwaarneming@gma il.com
Does someone has a scan of Nartshuk E.P. 2003. Key to families of Diptera (Insecta) of the fauna of Russian and adjacent countries. Proceedings of the Zoological Institute Vol. 294: 1-252 for me?