Morphology and anatomy of adults
Not all authors produced drawings of any kind when describing species for the first time. Authors who later produced keys had access to only a proportion of the overall European specimens as there is no single museum in Europe where one could locate all the species.
Accordingly there are many gaps in our knowledge regarding the appearance of many of these species. Much reliance has been placed, therefore, upon text descriptions and photographs.
For a general account of the morphology of Diptera, the online paper by Giancarlo Dessì (here) is an excellent reference.
Diagrams specifically related to the Micropezids and Tanypezids are currently under preparation and will be added to this site in due course.