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So, both are rudis !

So, I checked my collecting. The antenna in Panzeria rudis is surprisingly variable , Your second male is the macho type with dark antenna, only some brown at base of third segment, and borad third antennal segment. Your first is a feminine male, with lots of yellow, also on basal segments, and narrow third segment.

Your two cases represent more or less both extremes, but many are intermediate. Of course, this is based on Central European material and I would need to study the genitalia to be very sure. (I found a cryptic new species in Russian Far East).

But for now, it really is Panzeria rudis, both of them !

note that a similar situation, far more extreme, occurs in Phasia and Ectophasia.

Theo