Angle Shades moth

The Angle Shades moth (Brotolomia meticulosa, frequently classified as Phlogophora meticulosa) is a common noctuid moth known for being a significant pest in both agricultural and horticultural settings. It is recognized for its unique, moth-like resting posture, which resembles a withered leaf, allowing it to hide effectively during the day.

This species is a generalist feeder, meaning it attacks a wide range of host plants. The list includes essential crops such as lettuce, tomatoes, and various brassicas, as well as high-value ornamental plants like pelargoniums and chrysanthemums. Its polyphagous nature makes it a persistent challenge for growers globally.

Regarding its biology, the insect undergoes a complete metamorphosis. The adults are strong fliers and are typically active from spring through autumn. The larvae are voracious feeders, often hiding in the dense foliage of plants during the day and feeding actively at night. Overwintering occurs in the larval stage, allowing them to resume feeding as soon as temperatures rise.

The damage caused by the larvae is characterized by irregular holes and skeletonization of the leaves. In severe infestations, the caterpillars consume entire leaf blades, leaving only the veins. When they attack ornamental or greenhouse crops, they can ruin the aesthetic appearance of the plant, often boring into buds and shoots, causing irreversible structural damage.

Effective management strategies include integrated pest management (IPM) practices. Growers should prioritize the destruction of crop debris and the elimination of adjacent weeds that provide shelter. Monitoring using pheromone traps is highly recommended to time the application of insecticides correctly. Chemical control, when necessary, should involve treatments that target early larval stages to prevent large-scale crop loss.