Choreutis tigroides

Systematic position. Choreutis tigroides belongs to the order Lepidoptera, family Choreutidae (metalmark moths). These small moths are characterized by distinct patterns on their wings and specific feeding habits during their larval stage, which can impact plant health in various environments.

Host plants. The primary hosts for Choreutis tigroides are members of the Fabaceae (legume) family. They are frequently observed feeding on various clover species and related herbaceous plants, often causing economic losses in forage crop production and pasture management.

Biology and life cycle. The life cycle consists of four distinct stages: egg, larva, pupa, and adult. The lifecycle is synchronized with the vegetative development of the host plant. Female moths deposit eggs on the leaves, and the resulting larvae progress through several larval instars, exhibiting high feeding activity before spinning a cocoon to pupate.

Nature of damage and harmfulness. The larvae are leaf-miners and leaf-skeletonizers. They consume the green parenchyma tissue between the veins, often spinning webs to bind leaves together. This leads to reduced photosynthesis, stunted growth, and in severe cases, the necrosis of large parts of the foliage, significantly reducing the biomass production.

Control measures. Integrated Pest Management (IPM) is crucial for controlling Choreutis tigroides. Essential practices include:

• Maintaining field hygiene and removing crop residues.
• Encouraging natural predators such as parasitic wasps.
• Applying selective insecticides during the early larval stages when they are most vulnerable.
• Monitoring the flight of adults using pheromone lures to time pesticide applications accurately.