Work on the mortality responses of four lepidopteran pests of apples in New Zealand—Epiphyas postvittana(Walker),Cydia pomonella(L.),Planotortrix octoDugdale, andCtenopseustis obliquana(Walker)—to low O2/moderate CO2atmospheres is reviewed and additional data are presented. For bothE. postvittanaandC. pomonella, reducing the O2concentration and elevating the treatment temperature enhanced controlled atmosphere (CA) efficacy more than did increasing the CO2concentration. Thus at 20°C, a 0.4% O2/5.0% CO2CA gave the most rapid kill of the mixtures tested. The order of lifestage tolerance to this CA was similar forE. postvittana, C. pamonella, P. octo, andC. obliquanai.e., fifth instar > third instar > 3-day eggs > first instar. The four species exhibited a trend of tolerance ofC. pomonella>E. postvittana=P.octo=C. obliquana. An increase in the temperature to 30°C decreased the time for high mortality for all four species. However, this decrease was much greater forP. octoandC. obliquanathan forC. pomonellaandE. postvittana. The potential of these CA treatments for disinfestation of New Zealand apples for the Japanese and United States markets is discussed.