Densities of males of the leafrollerArchips podanawere determined by pheromone traps in the Lipetsk district, central Russia, in 1991. Industry emissions at Lipetsk contain especially sulphur dioxide. Densities ofA. podanapeaked at 3–7 km from the nearest source of emission. Male sizes (indicated by length of the aedeagus) tended to be smaller close to heavily polluted areas but did not correlate significantly with densities. Variation in size also peaked close to emission sources.