†Coleopsis archaica, holotype, ZfB 3315. A–C microscopic images, coaxial cross-polarised light, multi exposure bracketing. A detail of the head and prothorax region, part; B detail of the head and prothorax region, counterpart; C: detail of the left side of the mesothoracic region, part; D–G images derived from RTI imaging, the circular legends in the lower-left corners depict the convex half sphere used to calibrate the RTI setup under the same conditions as the images; D normal map representation of the part; E relative heights representation of the part; F normal map representation of the counterpart. Abbreviations: G relative heights representation of the counterpart. ce, compound eye; elm, elytral margin; elc, elytral antero-proximal corner; leg1, foreleg; md, mandible; mxp, maxillary palp; pnlp, lateral process of the pronotum; ve, venter.