Zeugodacus strigifinis

Systematic position. This pest belongs to the order Diptera, family Tephritidae. It is a highly significant insect species, often categorized as a quarantine pest in many regions, necessitating stringent phytosanitary measures to prevent its spread across international borders.

Host crops. Zeugodacus strigifinis attacks a wide range of plants. It is particularly known for infesting various vegetable and fruit crops, with a strong preference for members of the Cucurbitaceae family. The economic impact is substantial as it directly targets the edible part of the plant.

Biology and lifecycle. The lifecycle consists of egg, larva, pupa, and adult stages. Females lay eggs under the skin of the fruit. Upon hatching, the larvae tunnel into the pulp, consuming the tissue. The cycle is highly dependent on environmental conditions, allowing for multiple generations in favorable climates.

Nature of damage. Infestation leads to premature fruit drop and significant decay of the affected plant tissues. Larval feeding creates tunnels within the fruit, which often become entry points for secondary bacterial or fungal infections, rendering the product unmarketable and leading to severe yield losses.

Control measures. Integrated pest management (IPM) is essential for controlling this species. This includes the use of attractant-based traps for monitoring, the application of targeted insecticides, and strict sanitation practices, such as the prompt removal and destruction of infested fruits to break the reproductive cycle.