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Freddy,

I have no odea which key you use, but Rhinophords are easily recognized by their small calyoter (as in Scathophagidae) and their posterior spiracle (breathing opening in thorax) without distinct operculum (= door). Please note that some Calliphoridae (Melanomyia cum suis) share the first feature.

The postscutellum (subscutellum, if you wish) is indeed slightly convex in Rhinophoridae, but I would never use this as main feature. It is difficult to see and difficult to explain.

Main message: if the calypter is large, typical “Calyptratae”, it is NOT a Rhinophorid.

Furthermore, we don’t have Rhinophorids larger than 8 mm.

Theo