Liu, L.-Y. “A Review of the Powderpost Beetle Genera Xylothrips Lesne, 1901 and Calophagus Lesne, 1902 (Coleoptera: Bostrichidae: Bostrichinae: Xyloperthini)”. European Journal of Taxonomy, vol. 746, no. 1, Apr. 2021, pp. 130-47, doi:10.5852/ejt.2021.746.1325.