Sun, X.-X., Wang, L., Li, N., Sluys, R., Liu, D.-Z., Dong, Z.-M. and Chen, G.-W. 2024. Two species of Polycelis (Platyhelminthes, Tricladida, Planariidae) newly recorded for the Qinling Mountains and the Loess Plateau in China, with a comparative discussion on their karyotypes. Zootaxa. 5536, 4 (Nov. 2024), 581–599. DOI:https://doi.org/10.11646/zootaxa.5536.4.5.