This dataset contains the raw confocal laser scanning microscopy (CLSM) slices and X-ray microtomography (micro-CT) slices for the holotype of Delteredolaemus hei (NIGP200000) from mid-Cretaceous Burmese amber. This dataset is associated with the publication "Earliest teredid beetle from mid-Cretaceous amber of northern Myanmar (Coleoptera: Coccinelloidea: Teredidae): new genus and species" (DOI:10.1590/S1984-4689.v39.e22042). Confocal images were obtained with a Zeiss LSM710 confocal laser scanning microscope, using the 488 nm (Argon) laser excitation line. The original CZI files are provided, which could be opened by the ZEISS ZEN software. Micro-CT data were obtained with a Zeiss Xradia 520 Versa 3D X-ray microscope. Scanning parameters were as follows: isotropic voxel size, 2.2514 μm; power, 3 W; acceleration voltage, 40 kV; exposure time, 2 s; projections, 2701. The TIFF stack is provided.