Telenomus ochus

Systematic position: Telenomus ochus belongs to the order Hymenoptera and the family Scelionidae. These small parasitic wasps are recognized in entomology as highly specialized parasitoids that focus their developmental cycle on the eggs of various insect pests, primarily those within the order Lepidoptera.

Biology and life cycle: This species is a primary parasitoid. The female Telenomus ochus locates host eggs, punctures the chorion, and inserts its own egg inside. The parasitoid larva consumes the host egg content, completes its entire development inside the host shell, and eventually emerges as an adult, effectively preventing the pest from hatching.

Character of damage and impact: It is essential to clarify that Telenomus ochus is not a plant pest; rather, it is a significant beneficial insect. Its "harm" is directed exclusively at the eggs of agricultural pests. By parasitizing a large percentage of eggs in a cluster, this insect serves as a natural regulator that suppresses pest populations below economic injury levels.

Target crops and hosts: The wasp targets eggs of various moths that infest cereal crops, maize, and vegetable plants. Because of its efficient searching behavior, it is capable of locating egg masses even in heterogeneous agroecosystems, providing a consistent level of control over moth infestations across different agricultural landscapes.

Protection measures: To conserve Telenomus ochus populations, farmers should adopt Integrated Pest Management (IPM) strategies. Key recommendations include:

• Reducing the use of broad-spectrum contact insecticides.
• Applying selective biorational pesticides that spare beneficial insects.
• Preserving natural habitat patches near fields to provide refuge for parasitoids.
• Timing field treatments to avoid disrupting the peak activity period of the wasps.