Nabis (Nabis) ericetorum Scholtz, 1847
Specimen already dead and damaged when beaten from Calluna vulgaris. Species ID as per Gierlasiński 2020 & Péricart 1987 (length of paramer disk), and of course both reddish colouring and origin (Callunetum) are supportive
Note: the brown transverse lines at outer side of forefemora tend to be fused into continuous brown-black spot, therefore not a reliable feature to identify such specimens as N. brevis in the field.