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Arriaga-Jiménez, A. et al. 2023. A taxonomic review of the endemic Mexican genus Ceratotrupes Jekel, 1865 (Coleoptera: Geotrupidae: Ceratotrupini), with the description of an unexpected new species from the Sierra Madre del Sur. European Journal of Taxonomy. 885, 1 (Jul. 2023), 1–20. DOI:https://doi.org/10.5852/ejt.2023.885.2183.