Time of emergence of Comadia redtenbacheri (Hammerschmidt), ratio of sexes of emerged adults, behavior during emergence and mating, and effect on fecundity by different ratios of females to males were studied in a laboratory. Adults emerged from April to May. The sex ratio was 1:1. They mated the same day they left the cocoon because they live only 3 to 5 days. The study began with mature larvae ready to pupate. Adults began emerging 179 days after larvae were induced to pupate. The total number of days of emergence was 49, with greatest abundance on days 19 and 20. Emergence of adults of both sexes was synchronized (r = 0.7741). The egg stage lasted a mean of 2 months. Greatest fecundity was observed with the ratios of one female to two males and one female to three males, while least fecundity was observed with a ratio of 1:1.