Hard to say - potentially Sperchon denticulatus although the colour isn't red enough. 

These figures are not are insufficient to express that Sperchon denticulatus. Palpae are required with side wiev

Dear Vasco Elbrecht,

I think if you provide more closer photographs (surface, ventral, lateral view etc) of course with high resolutions that might be helpful for the expert to identify or compare similarities.