The supplementery data to the article "The first larva of the cucujiform superfamily Cleroidea from the Mesozoic and its ecological implications (Coleoptera)" contain the 8 bit TIFF image stack obtained at the Imaging Beamline P05 (IBL) operated by the Helmholtz-Zentrum Hereon at the storage ring PETRA III (Deutsches Elektronen Synchrotron-DESY, Hamburg, Germany) using synchrotron radiation based micro-computed tomography (SRμCT). The scan of the holotype specimen of Cretorhadalus constantini Kolibáč & Prokop, 2023 was used for the segmentation and volume renders.

Scanning of the holotype specimen was supported by the DESY Block Allocation Group project "Scanning the past – Reconstructing the diversity in million years old fossil amber specimens using SRμCT" at PETRA III (Hamburg, Germany). J.K. was supported by the long-term conceptual development program for research institutions provided to the Moravian Museum by the Ministry of Culture of the Czech Republic (ref. MK000094862). The work of K.R, J.S.P. and J.P. was supported by the Grant Agency of the Czech Republic (No. 21-05216S).