This regulation establishes a time-limited tolerance for diflubenzuron and its metabolites p-chlorophenylurea and p- chloroaniline in or on lemon. This action is in response to EPA's granting of an emergency exemption under section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) authorizing use of the pesticide on lemon. This regulation establishes a maximum permissible level for combined residues of diflubenzuron and its metabolites p-chlorophenylurea and p-chloroaniline, in this food commodity. The tolerance expires and is revoked on December 31, 2010.