Forest leafroller moth

Systematic position. Ancylis hylaea belongs to the order Lepidoptera, family Tortricidae. This species is recognized for its larval stage, which feeds on the foliage of woody plants, occasionally becoming a nuisance in both forestry and commercial fruit growing operations.

Host plants. The pest primarily targets foliage of various deciduous trees. While it is often associated with wild woodland species, it may migrate to nearby orchards, affecting fruit-bearing trees and ornamental varieties by consuming leaf tissues during the spring and summer months.

Biology and life cycle. The life cycle involves complete metamorphosis: egg, larva (caterpillar), pupa, and adult moth. The female moth lays eggs on the undersides of leaves or near buds. Larvae emerge and immediately begin feeding, moving through several instars. Pupation typically occurs within the leaf rolls or in the organic matter beneath the tree canopy.

Damage patterns and economic impact. The larvae are notorious for webbing leaf edges together to create protective shelters known as rolls. Within these rolls, they feed extensively, leading to leaf skeletonization, necrosis, and premature abscission. In cases of high infestation, this reduces the plant's photosynthetic capacity, potentially impacting fruit quality and overall tree vitality.

Control measures. Integrated Pest Management (IPM) is recommended to control Ancylis hylaea. Key strategies include mechanical removal of infested leaves, the use of pheromone traps for monitoring flight peaks, and the application of selective insecticides or biological control agents like Bacillus thuringiensis. Maintaining tree health through proper fertilization and pruning also helps plants withstand moderate damage.