Zawal, A. “Morphology of Larval Stages of Arrenurus Cuspidator (O. F. Müller) and A. Maculator (O. F. Müller) (Acari: Hydrachnidia)”. Zootaxa, vol. 1194, no. 1, May 2006, pp. 57–68, doi:10.11646/zootaxa.1194.1.4.