Male genitalia of Pterostichus (Circinatus) spp.; A left lateral view of median lobe B dorsal view of median lobe C right paramere D left lateral view of endophallus E right lateral view of endophallus F ventral view of endophallus G dorsal view of endophallus 46 P. yuxiaodongi sp. n., holotype 47 P. pohnerti Jedlička, locality: Hailuogou 48 P. xilingensis Allegro & Sciaky, locality: Wolong. Abbreviations of endophallic lobes explained in description of each species. Scale bars: 0.5 mm (A, B, D, E, F, G); 0.2 mm (C).