Bembidion bukejsi sp. n., holotype, visualization of endophallic structures using micro-CT. 14 volume rendering of the aedeagal median lobe with sclerotized endophallic structures highlighted in colors 15–16 parts of transverse sections through the abdomen with aedeagus (for position of slices see Fig. 14) 17 sclerotized endophallic structures separated and highlighted in colors using serial sectioning (a-d, left lateral aspect; e, right lateral aspect; f-g, dorsal aspect). Colour coding: beige = internal fold originating from the brush sclerite; green = central sclerite; khaki = dorsal field; light blue = dorsal plate; marine blue = ostidial flag; red = central fold system; white = unknown sclerite; yellow = brush sclerite. Abbreviations: bsc = brush sclerite; bsc-fd-i = internal fold originating from the brush sclerite; bsc-fd-v = ventral prolongation of the brush sclerite; cfd = central folding system; csc = central sclerite; dpl = dorsal plate; mlw = wall of median lobe; scu = unknown sclerite; st = sternite.