Lufenuron is a lipophilic benzoylurea insecticide and a chitin synthesis inhibitor that can used for flea and fish lice control. Lufenuron inhibits moulting of arthropods[1][2].
References:
[1]. T C M Brock, et al. Toxicity of Sediment-Bound Lufenuron to Benthic Arthropods in Laboratory Bioassays. Aquat Toxicol. 2018 May;198:118-128.
[2]. Cai Wang, et al. Lufenuron Suppresses the Resistance of Formosan Subterranean Termites (Isoptera: Rhinotermitidae) to Entomopathogenic Bacteria. J Econ Entomol. 2013 Aug;106(4):1812-8.