Ernestia and Panzeria are definitely the same, because they are based on the same type species (Tachina rudis); it is merely a question of the name. Mesnil obviously did not accept the "first revisor" concept in the case of Ernestia/Panzeria, so Herting, following Mesnil, used Ernestia as valid name in his relevant and widespread catalogues, and the latter is the reason why I used it too.

I fear the Americans are "in the right" because "page priority" is non-binding for nomenclatural acts (see e.g. http://mailman.nh...32895.html).

Use Panzeria instead of Ernestia (I have just seen that Joachim Ziegler uses Panzeria too - and a splitted use in the Palearctic would make no sense). I will also use Panzeria from now on (but I currently do not know when FaunaEuropaea will be actualized).

R.D. 1863: 144-146 (http://www.archiv...4/mode/2up and http://www.archiv...6/mode/2up) states "Son genre Ernestia, p. 60, était la Femelle" and he lists Ernestia microcera R.D. (= type species of Ernestia R.D.) as a synonym of Tachina rudis Fallén under the genus Panzeria. This is all, but R.D. is - because of this - treated as "first revisor" in the sense of the code.

R.D.'s descriptions of Ernestia and Panzeria from 1830 are also available in the internet (http://www.archiv...0/mode/2up, http://www.archiv...8/mode/2up).