A–B. 3D-reconstruction of ‡Amphientomum knorrei sp. nov. A. Internal view from left side, sagittal cut; B. internal view from right side, sagittal cut. Abbreviations: car = circumantennal ridge, cor = circumocular ridge, cr = coronal ridge, epp = epiproct, epr = epistomal ridge, fl = foreleg, ger = genal ridge, hl = hindleg, lap = labial palp, lc = lacinia, ml = midleg, msf = mesofurca, msp = mesophragma, mtf = metafurca, mtp = metaphragma, pap = paraproct, parr = parapsidial ridge, prf = profurca, prn = pronotum, sgp = subgenital plate.