Trechus exhibitorius sp. n., holotype, volume rendering of selected body parts. 7 head, ventral aspect 8 head, anterior part, dorsal aspect 9 mandibles, view from dorsal (the dorsal surface of the right mandible is cut together with the labrum in order to show the mandibular dentition; the contour of the apical portion of the right mandible is indicated by a dotted line) 10 elytra, caudal aspect 11 elytral epipleuron and left external part of metathorax 12 elytra and abdomen, right lateral aspect. Abbreviations: aed = aedeagus; cl = clypeus; hs = humeral series; lbr = labrum; M = phoretic mite; meps = metepisternum; ms = medial series; mt = mentum; pas = preapical seta; rst = recurrent stria; sas = subapical series; smt = submentum; ta, tb, tm = apical, basal, medial denticle of the right mandible.