The mating frequency of wild females of Pieris canidia indica was examined by dissection of the bursa copulatrix. Most females of age class 0 had at least one spermatophore, suggesting that they mated soon after eclosion. Aged females were observed to have two or more spermatophores. The volume of the bursa copulatrix increased when the female mated. Virgin females carry about 300 immature eggs. Older females have about 100 immature eggs, so at least 200 mature eggs are thought to be deposited throughout the female life span.