No. Butterflies and moths do most of their eating when they are in the caterpillar stage. Almost all caterpillars eat plant parts, but a few are carnivorous. Caterpillars of the carnivorous Harvester butterfly of the eastern U.S. eat wooly aphids. The adult female butterfly lays her eggs in the middle of aphid masses.


Source: Opler & Krizek. 1983. Butterflies east of the Great Plains. Johns Hopkins Univ. Press.