It emerges in late April and feeds on various plants, causing injury similar to other plant bugs. See plant bugs under Perennials for control guidelines. Redbanded leafroller , Argyrotaenia velutinana. These leafrollers sometimes injure the foliage. Pupae of the red-banded leafroller overwinter in sheltered areas.
Females lay masses of eggs on the bark, and the caterpillars hatch at about the end of bloom.
The green caterpillars feed along the midvein or larger veins while they live in a flimsy white web which is expanded as the larva grows. Caterpillars mature during June and form pupae in sheltered locations, such as folded leaves. The red-banded leafroller has 3 generations per year. Females lay the eggs of the second and third generations mainly on the upper surfaces of leaves. Bacillus thuringiensis , which is among the compounds registered for use against this pest in Connecticut, may be applied when young larvae are present.