Checkered white

Systematic position: The Checkered white (Pieris protodice) belongs to the order Lepidoptera and the family Pieridae. It is a butterfly species native to North America, known for its distinct black and white wing patterns and its impact on agriculture.

Host plants: The primary hosts are plants belonging to the Brassicaceae family. This includes a wide range of commercially grown crops such as cabbage, kale, broccoli, radish, and mustard, as well as various wild mustards that act as alternate hosts throughout the growing season.

Biology and life cycle: The insect undergoes a complete metamorphosis: egg, larva (caterpillar), pupa, and adult. Females typically oviposit on the underside of leaves. The larvae go through several instars, feeding voraciously on foliage before pupating, often on the host plant or in nearby debris.

Damage and pest status: Damage is caused primarily by the larval stage. Caterpillars chew holes in leaves, often starting from the edges or causing "shot-hole" damage in the early stages. Heavy infestations can lead to significant defoliation, stunted plant growth, and a reduction in the marketability of leafy greens.

Protection measures: Integrated pest management (IPM) is essential for controlling this species. Cultural practices such as crop rotation and the removal of wild cruciferous weeds help limit population buildup. When necessary, the application of biological agents, such as Bacillus thuringiensis, or targeted selective insecticides is recommended to suppress outbreaks.