Green grasshopper-leaf eater

Caedicia strenua is an insect belonging to the order Orthoptera and the family Tettigoniidae. Widely recognized as a foliage-feeding pest, this grasshopper is characterized by its bright green coloration which provides excellent camouflage among leaves, making detection difficult for agronomists and farmers until significant feeding damage has already occurred.

The host range of this pest is diverse, encompassing various fruit trees, citrus, ornamental shrubs, and occasionally vineyard foliage. By utilizing robust mandibles, the insects feed primarily on the leaf blade, often resulting in jagged edges or complete removal of the leaf tissue, which disrupts the normal physiological processes of the plant.

The life cycle follows a standard pattern for the Tettigoniidae family. Eggs are typically laid within plant tissues or the upper soil layer, where they remain during the dormant season. Upon hatching, the nymphs begin feeding on fresh vegetation, undergoing several molts until reaching the adult stage, typically following a univoltine (single-generation) annual cycle.

Economic damage is caused by the reduction of the photosynthetic leaf area. Heavy infestations can lead to severe canopy thinning, which negatively impacts fruit set, size, and overall plant vigor. In nurseries and young plantations, the damage is particularly critical as it can stunt growth and increase the susceptibility of plants to secondary environmental stress.

Effective management requires a combination of monitoring and intervention strategies. Growers should prioritize the following:

• Cultural practices such as clearing debris to destroy potential egg sites.
• Regular field scouting during early spring to identify nymphal stages.
• Application of targeted insecticides if economic thresholds are exceeded.