Tropidacris

Tropidacris belongs to the order Orthoptera and the family Acrididae. These insects are among the largest grasshoppers in the world, characterized by their impressive body size and wing span, which makes them a significant threat to agriculture in the tropical regions where they are prevalent.

The pest targets a wide range of vegetation, including fruit trees, ornamental plants, legumes, cereal crops, and forest trees. Under tropical climatic conditions, Tropidacris can cause massive damage to plantations by stripping foliage and consuming young shoots, which weakens the plant and significantly reduces overall productivity.

The biology of this pest is highly dependent on climate cycles. Females lay their eggs in the soil, where they undergo a stage of diapause until favorable conditions arrive. Nymphs pass through several developmental stages (instars) while feeding actively, and their appetite increases dramatically as they grow, posing a severe risk to agrarian systems.

Damage caused by Tropidacris typically involves extensive skeletonization of leaves, as they consume the leaf tissue while leaving the central veins intact. A massive infestation leads to the defoliation of entire orchards and fields, often resulting in total crop loss. Due to their large size, a single individual can consume a substantial volume of green mass daily.

Protection strategies require monitoring the population density of both nymphs and adults during early development phases. Recommended measures include the application of contact and systemic insecticides, as well as agro-technical practices such as soil tillage to destroy egg pods. In localized areas, manual collection during the early morning hours, when the insects are less active, can also be effective.