---

Chvála's key is only useful for a select few of tachydromiine genera. The best option to get genera identified is Collin's key in British Flies (1961) with some updates for replaced generic names, or even the old key in Lindner (same issue with generic and subgeneric names) but a few of the more 'exotic' genera are only included in that key. For certain subfamilies there are other keys to genera, for example Sinclair's key to the clinocerine genera. I am willing to help out in identifying genera off the forum if you need assistence.